Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * fs/cifs/inode.c |
| 3 | * |
Steve French | f19159d | 2010-04-21 04:12:10 +0000 | [diff] [blame] | 4 | * Copyright (C) International Business Machines Corp., 2002,2010 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | * Author(s): Steve French (sfrench@us.ibm.com) |
| 6 | * |
| 7 | * This library is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU Lesser General Public License as published |
| 9 | * by the Free Software Foundation; either version 2.1 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This library is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| 15 | * the GNU Lesser General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU Lesser General Public License |
| 18 | * along with this library; if not, write to the Free Software |
| 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 20 | */ |
| 21 | #include <linux/fs.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | #include <linux/stat.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 23 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | #include <linux/pagemap.h> |
| 25 | #include <asm/div64.h> |
| 26 | #include "cifsfs.h" |
| 27 | #include "cifspdu.h" |
| 28 | #include "cifsglob.h" |
| 29 | #include "cifsproto.h" |
| 30 | #include "cifs_debug.h" |
| 31 | #include "cifs_fs_sb.h" |
Suresh Jayaraman | 9451a9a | 2010-07-05 18:12:45 +0530 | [diff] [blame] | 32 | #include "fscache.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | |
Christoph Hellwig | 70eff55 | 2008-02-15 20:55:05 +0000 | [diff] [blame] | 34 | |
David Howells | 01c64fe | 2011-01-14 18:45:47 +0000 | [diff] [blame] | 35 | static void cifs_set_ops(struct inode *inode) |
Christoph Hellwig | 70eff55 | 2008-02-15 20:55:05 +0000 | [diff] [blame] | 36 | { |
| 37 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); |
| 38 | |
| 39 | switch (inode->i_mode & S_IFMT) { |
| 40 | case S_IFREG: |
| 41 | inode->i_op = &cifs_file_inode_ops; |
| 42 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) { |
| 43 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL) |
| 44 | inode->i_fop = &cifs_file_direct_nobrl_ops; |
| 45 | else |
| 46 | inode->i_fop = &cifs_file_direct_ops; |
Pavel Shilovsky | 8be7e6b | 2010-12-12 13:11:13 +0300 | [diff] [blame] | 47 | } else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_STRICT_IO) { |
| 48 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL) |
| 49 | inode->i_fop = &cifs_file_strict_nobrl_ops; |
| 50 | else |
| 51 | inode->i_fop = &cifs_file_strict_ops; |
Christoph Hellwig | 70eff55 | 2008-02-15 20:55:05 +0000 | [diff] [blame] | 52 | } else if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL) |
| 53 | inode->i_fop = &cifs_file_nobrl_ops; |
| 54 | else { /* not direct, send byte range locks */ |
| 55 | inode->i_fop = &cifs_file_ops; |
| 56 | } |
| 57 | |
Christoph Hellwig | 70eff55 | 2008-02-15 20:55:05 +0000 | [diff] [blame] | 58 | /* check if server can support readpages */ |
Jeff Layton | 0d424ad | 2010-09-20 16:01:35 -0700 | [diff] [blame] | 59 | if (cifs_sb_master_tcon(cifs_sb)->ses->server->maxBuf < |
Christoph Hellwig | 70eff55 | 2008-02-15 20:55:05 +0000 | [diff] [blame] | 60 | PAGE_CACHE_SIZE + MAX_CIFS_HDR_SIZE) |
| 61 | inode->i_data.a_ops = &cifs_addr_ops_smallbuf; |
| 62 | else |
| 63 | inode->i_data.a_ops = &cifs_addr_ops; |
| 64 | break; |
| 65 | case S_IFDIR: |
Steve French | bc5b6e2 | 2008-03-11 21:07:48 +0000 | [diff] [blame] | 66 | #ifdef CONFIG_CIFS_DFS_UPCALL |
David Howells | 01c64fe | 2011-01-14 18:45:47 +0000 | [diff] [blame] | 67 | if (IS_AUTOMOUNT(inode)) { |
Igor Mammedov | 7962670 | 2008-03-09 03:44:18 +0000 | [diff] [blame] | 68 | inode->i_op = &cifs_dfs_referral_inode_operations; |
| 69 | } else { |
Steve French | bc5b6e2 | 2008-03-11 21:07:48 +0000 | [diff] [blame] | 70 | #else /* NO DFS support, treat as a directory */ |
| 71 | { |
| 72 | #endif |
Igor Mammedov | 7962670 | 2008-03-09 03:44:18 +0000 | [diff] [blame] | 73 | inode->i_op = &cifs_dir_inode_ops; |
| 74 | inode->i_fop = &cifs_dir_ops; |
| 75 | } |
Christoph Hellwig | 70eff55 | 2008-02-15 20:55:05 +0000 | [diff] [blame] | 76 | break; |
| 77 | case S_IFLNK: |
| 78 | inode->i_op = &cifs_symlink_inode_ops; |
| 79 | break; |
| 80 | default: |
| 81 | init_special_inode(inode, inode->i_mode, inode->i_rdev); |
| 82 | break; |
| 83 | } |
| 84 | } |
| 85 | |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 86 | /* check inode attributes against fattr. If they don't match, tag the |
| 87 | * inode for cache invalidation |
| 88 | */ |
| 89 | static void |
| 90 | cifs_revalidate_cache(struct inode *inode, struct cifs_fattr *fattr) |
| 91 | { |
| 92 | struct cifsInodeInfo *cifs_i = CIFS_I(inode); |
| 93 | |
Steve French | f19159d | 2010-04-21 04:12:10 +0000 | [diff] [blame] | 94 | cFYI(1, "%s: revalidating inode %llu", __func__, cifs_i->uniqueid); |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 95 | |
| 96 | if (inode->i_state & I_NEW) { |
Steve French | f19159d | 2010-04-21 04:12:10 +0000 | [diff] [blame] | 97 | cFYI(1, "%s: inode %llu is new", __func__, cifs_i->uniqueid); |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 98 | return; |
| 99 | } |
| 100 | |
| 101 | /* don't bother with revalidation if we have an oplock */ |
| 102 | if (cifs_i->clientCanCacheRead) { |
Steve French | f19159d | 2010-04-21 04:12:10 +0000 | [diff] [blame] | 103 | cFYI(1, "%s: inode %llu is oplocked", __func__, |
| 104 | cifs_i->uniqueid); |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 105 | return; |
| 106 | } |
| 107 | |
| 108 | /* revalidate if mtime or size have changed */ |
| 109 | if (timespec_equal(&inode->i_mtime, &fattr->cf_mtime) && |
| 110 | cifs_i->server_eof == fattr->cf_eof) { |
Steve French | f19159d | 2010-04-21 04:12:10 +0000 | [diff] [blame] | 111 | cFYI(1, "%s: inode %llu is unchanged", __func__, |
| 112 | cifs_i->uniqueid); |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 113 | return; |
| 114 | } |
| 115 | |
Steve French | f19159d | 2010-04-21 04:12:10 +0000 | [diff] [blame] | 116 | cFYI(1, "%s: invalidating inode %llu mapping", __func__, |
| 117 | cifs_i->uniqueid); |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 118 | cifs_i->invalid_mapping = true; |
| 119 | } |
| 120 | |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 121 | /* populate an inode with info from a cifs_fattr struct */ |
| 122 | void |
| 123 | cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr) |
Christoph Hellwig | 75f1298 | 2008-02-25 20:25:21 +0000 | [diff] [blame] | 124 | { |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 125 | struct cifsInodeInfo *cifs_i = CIFS_I(inode); |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 126 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); |
| 127 | unsigned long oldtime = cifs_i->time; |
Christoph Hellwig | 75f1298 | 2008-02-25 20:25:21 +0000 | [diff] [blame] | 128 | |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 129 | cifs_revalidate_cache(inode, fattr); |
| 130 | |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 131 | inode->i_atime = fattr->cf_atime; |
| 132 | inode->i_mtime = fattr->cf_mtime; |
| 133 | inode->i_ctime = fattr->cf_ctime; |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 134 | inode->i_rdev = fattr->cf_rdev; |
| 135 | inode->i_nlink = fattr->cf_nlink; |
| 136 | inode->i_uid = fattr->cf_uid; |
| 137 | inode->i_gid = fattr->cf_gid; |
| 138 | |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 139 | /* if dynperm is set, don't clobber existing mode */ |
| 140 | if (inode->i_state & I_NEW || |
| 141 | !(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)) |
| 142 | inode->i_mode = fattr->cf_mode; |
| 143 | |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 144 | cifs_i->cifsAttrs = fattr->cf_cifsattrs; |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 145 | |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 146 | if (fattr->cf_flags & CIFS_FATTR_NEED_REVAL) |
| 147 | cifs_i->time = 0; |
| 148 | else |
| 149 | cifs_i->time = jiffies; |
| 150 | |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 151 | cFYI(1, "inode 0x%p old_time=%ld new_time=%ld", inode, |
| 152 | oldtime, cifs_i->time); |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 153 | |
| 154 | cifs_i->delete_pending = fattr->cf_flags & CIFS_FATTR_DELETE_PENDING; |
Christoph Hellwig | 75f1298 | 2008-02-25 20:25:21 +0000 | [diff] [blame] | 155 | |
Jeff Layton | 835a36c | 2010-02-10 16:21:33 -0500 | [diff] [blame] | 156 | cifs_i->server_eof = fattr->cf_eof; |
Christoph Hellwig | 75f1298 | 2008-02-25 20:25:21 +0000 | [diff] [blame] | 157 | /* |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 158 | * Can't safely change the file size here if the client is writing to |
| 159 | * it due to potential races. |
Christoph Hellwig | 75f1298 | 2008-02-25 20:25:21 +0000 | [diff] [blame] | 160 | */ |
Christoph Hellwig | 75f1298 | 2008-02-25 20:25:21 +0000 | [diff] [blame] | 161 | spin_lock(&inode->i_lock); |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 162 | if (is_size_safe_to_change(cifs_i, fattr->cf_eof)) { |
| 163 | i_size_write(inode, fattr->cf_eof); |
Christoph Hellwig | 75f1298 | 2008-02-25 20:25:21 +0000 | [diff] [blame] | 164 | |
| 165 | /* |
| 166 | * i_blocks is not related to (i_size / i_blksize), |
| 167 | * but instead 512 byte (2**9) size is required for |
| 168 | * calculating num blocks. |
| 169 | */ |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 170 | inode->i_blocks = (512 - 1 + fattr->cf_bytes) >> 9; |
Christoph Hellwig | 75f1298 | 2008-02-25 20:25:21 +0000 | [diff] [blame] | 171 | } |
| 172 | spin_unlock(&inode->i_lock); |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 173 | |
David Howells | 01c64fe | 2011-01-14 18:45:47 +0000 | [diff] [blame] | 174 | if (fattr->cf_flags & CIFS_FATTR_DFS_REFERRAL) |
| 175 | inode->i_flags |= S_AUTOMOUNT; |
| 176 | cifs_set_ops(inode); |
Christoph Hellwig | 75f1298 | 2008-02-25 20:25:21 +0000 | [diff] [blame] | 177 | } |
| 178 | |
Jeff Layton | 4065c80 | 2010-05-17 07:18:58 -0400 | [diff] [blame] | 179 | void |
| 180 | cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr) |
| 181 | { |
| 182 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
| 183 | |
| 184 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) |
| 185 | return; |
| 186 | |
| 187 | fattr->cf_uniqueid = iunique(sb, ROOT_I); |
| 188 | } |
| 189 | |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 190 | /* Fill a cifs_fattr struct with info from FILE_UNIX_BASIC_INFO. */ |
| 191 | void |
| 192 | cifs_unix_basic_to_fattr(struct cifs_fattr *fattr, FILE_UNIX_BASIC_INFO *info, |
| 193 | struct cifs_sb_info *cifs_sb) |
| 194 | { |
| 195 | memset(fattr, 0, sizeof(*fattr)); |
| 196 | fattr->cf_uniqueid = le64_to_cpu(info->UniqueId); |
| 197 | fattr->cf_bytes = le64_to_cpu(info->NumOfBytes); |
| 198 | fattr->cf_eof = le64_to_cpu(info->EndOfFile); |
| 199 | |
| 200 | fattr->cf_atime = cifs_NTtimeToUnix(info->LastAccessTime); |
| 201 | fattr->cf_mtime = cifs_NTtimeToUnix(info->LastModificationTime); |
| 202 | fattr->cf_ctime = cifs_NTtimeToUnix(info->LastStatusChange); |
| 203 | fattr->cf_mode = le64_to_cpu(info->Permissions); |
| 204 | |
| 205 | /* |
| 206 | * Since we set the inode type below we need to mask off |
| 207 | * to avoid strange results if bits set above. |
| 208 | */ |
| 209 | fattr->cf_mode &= ~S_IFMT; |
| 210 | switch (le32_to_cpu(info->Type)) { |
| 211 | case UNIX_FILE: |
| 212 | fattr->cf_mode |= S_IFREG; |
| 213 | fattr->cf_dtype = DT_REG; |
| 214 | break; |
| 215 | case UNIX_SYMLINK: |
| 216 | fattr->cf_mode |= S_IFLNK; |
| 217 | fattr->cf_dtype = DT_LNK; |
| 218 | break; |
| 219 | case UNIX_DIR: |
| 220 | fattr->cf_mode |= S_IFDIR; |
| 221 | fattr->cf_dtype = DT_DIR; |
| 222 | break; |
| 223 | case UNIX_CHARDEV: |
| 224 | fattr->cf_mode |= S_IFCHR; |
| 225 | fattr->cf_dtype = DT_CHR; |
| 226 | fattr->cf_rdev = MKDEV(le64_to_cpu(info->DevMajor), |
| 227 | le64_to_cpu(info->DevMinor) & MINORMASK); |
| 228 | break; |
| 229 | case UNIX_BLOCKDEV: |
| 230 | fattr->cf_mode |= S_IFBLK; |
| 231 | fattr->cf_dtype = DT_BLK; |
| 232 | fattr->cf_rdev = MKDEV(le64_to_cpu(info->DevMajor), |
| 233 | le64_to_cpu(info->DevMinor) & MINORMASK); |
| 234 | break; |
| 235 | case UNIX_FIFO: |
| 236 | fattr->cf_mode |= S_IFIFO; |
| 237 | fattr->cf_dtype = DT_FIFO; |
| 238 | break; |
| 239 | case UNIX_SOCKET: |
| 240 | fattr->cf_mode |= S_IFSOCK; |
| 241 | fattr->cf_dtype = DT_SOCK; |
| 242 | break; |
| 243 | default: |
| 244 | /* safest to call it a file if we do not know */ |
| 245 | fattr->cf_mode |= S_IFREG; |
| 246 | fattr->cf_dtype = DT_REG; |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 247 | cFYI(1, "unknown type %d", le32_to_cpu(info->Type)); |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 248 | break; |
| 249 | } |
| 250 | |
| 251 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID) |
| 252 | fattr->cf_uid = cifs_sb->mnt_uid; |
| 253 | else |
| 254 | fattr->cf_uid = le64_to_cpu(info->Uid); |
| 255 | |
| 256 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID) |
| 257 | fattr->cf_gid = cifs_sb->mnt_gid; |
| 258 | else |
| 259 | fattr->cf_gid = le64_to_cpu(info->Gid); |
| 260 | |
| 261 | fattr->cf_nlink = le64_to_cpu(info->Nlinks); |
| 262 | } |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 263 | |
| 264 | /* |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 265 | * Fill a cifs_fattr struct with fake inode info. |
| 266 | * |
| 267 | * Needed to setup cifs_fattr data for the directory which is the |
| 268 | * junction to the new submount (ie to setup the fake directory |
| 269 | * which represents a DFS referral). |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 270 | */ |
Steve French | f1230c9 | 2009-07-22 23:13:01 +0000 | [diff] [blame] | 271 | static void |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 272 | cifs_create_dfs_fattr(struct cifs_fattr *fattr, struct super_block *sb) |
Steve French | 0e4bbde | 2008-05-20 19:50:46 +0000 | [diff] [blame] | 273 | { |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 274 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
Steve French | 0e4bbde | 2008-05-20 19:50:46 +0000 | [diff] [blame] | 275 | |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 276 | cFYI(1, "creating fake fattr for DFS referral"); |
Steve French | 0e4bbde | 2008-05-20 19:50:46 +0000 | [diff] [blame] | 277 | |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 278 | memset(fattr, 0, sizeof(*fattr)); |
| 279 | fattr->cf_mode = S_IFDIR | S_IXUGO | S_IRWXU; |
| 280 | fattr->cf_uid = cifs_sb->mnt_uid; |
| 281 | fattr->cf_gid = cifs_sb->mnt_gid; |
| 282 | fattr->cf_atime = CURRENT_TIME; |
| 283 | fattr->cf_ctime = CURRENT_TIME; |
| 284 | fattr->cf_mtime = CURRENT_TIME; |
| 285 | fattr->cf_nlink = 2; |
| 286 | fattr->cf_flags |= CIFS_FATTR_DFS_REFERRAL; |
Steve French | 0e4bbde | 2008-05-20 19:50:46 +0000 | [diff] [blame] | 287 | } |
| 288 | |
Jeff Layton | abab095 | 2010-02-12 07:44:18 -0500 | [diff] [blame] | 289 | int cifs_get_file_info_unix(struct file *filp) |
| 290 | { |
| 291 | int rc; |
| 292 | int xid; |
| 293 | FILE_UNIX_BASIC_INFO find_data; |
| 294 | struct cifs_fattr fattr; |
| 295 | struct inode *inode = filp->f_path.dentry->d_inode; |
| 296 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); |
Joe Perches | c21dfb6 | 2010-07-12 13:50:14 -0700 | [diff] [blame] | 297 | struct cifsFileInfo *cfile = filp->private_data; |
Jeff Layton | 13cfb73 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 298 | struct cifsTconInfo *tcon = tlink_tcon(cfile->tlink); |
Jeff Layton | abab095 | 2010-02-12 07:44:18 -0500 | [diff] [blame] | 299 | |
| 300 | xid = GetXid(); |
| 301 | rc = CIFSSMBUnixQFileInfo(xid, tcon, cfile->netfid, &find_data); |
| 302 | if (!rc) { |
| 303 | cifs_unix_basic_to_fattr(&fattr, &find_data, cifs_sb); |
| 304 | } else if (rc == -EREMOTE) { |
| 305 | cifs_create_dfs_fattr(&fattr, inode->i_sb); |
| 306 | rc = 0; |
| 307 | } |
| 308 | |
| 309 | cifs_fattr_to_inode(inode, &fattr); |
| 310 | FreeXid(xid); |
| 311 | return rc; |
| 312 | } |
| 313 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | int cifs_get_inode_info_unix(struct inode **pinode, |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 315 | const unsigned char *full_path, |
| 316 | struct super_block *sb, int xid) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | { |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 318 | int rc; |
Steve French | 0e4bbde | 2008-05-20 19:50:46 +0000 | [diff] [blame] | 319 | FILE_UNIX_BASIC_INFO find_data; |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 320 | struct cifs_fattr fattr; |
| 321 | struct cifsTconInfo *tcon; |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 322 | struct tcon_link *tlink; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 324 | |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 325 | cFYI(1, "Getting info on %s", full_path); |
Igor Mammedov | 7962670 | 2008-03-09 03:44:18 +0000 | [diff] [blame] | 326 | |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 327 | tlink = cifs_sb_tlink(cifs_sb); |
| 328 | if (IS_ERR(tlink)) |
| 329 | return PTR_ERR(tlink); |
| 330 | tcon = tlink_tcon(tlink); |
| 331 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | /* could have done a find first instead but this returns more info */ |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 333 | rc = CIFSSMBUnixQPathInfo(xid, tcon, full_path, &find_data, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 334 | cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & |
| 335 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 336 | cifs_put_tlink(tlink); |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 337 | |
| 338 | if (!rc) { |
| 339 | cifs_unix_basic_to_fattr(&fattr, &find_data, cifs_sb); |
| 340 | } else if (rc == -EREMOTE) { |
| 341 | cifs_create_dfs_fattr(&fattr, sb); |
Jeff Layton | e911d0c | 2008-07-12 13:47:59 -0700 | [diff] [blame] | 342 | rc = 0; |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 343 | } else { |
| 344 | return rc; |
Steve French | 0e4bbde | 2008-05-20 19:50:46 +0000 | [diff] [blame] | 345 | } |
| 346 | |
Stefan Metzmacher | 1b12b9c | 2010-08-05 21:19:56 +0200 | [diff] [blame] | 347 | /* check for Minshall+French symlinks */ |
| 348 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) { |
| 349 | int tmprc = CIFSCheckMFSymlink(&fattr, full_path, cifs_sb, xid); |
| 350 | if (tmprc) |
| 351 | cFYI(1, "CIFSCheckMFSymlink: %d", tmprc); |
| 352 | } |
| 353 | |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 354 | if (*pinode == NULL) { |
| 355 | /* get new inode */ |
Jeff Layton | 4065c80 | 2010-05-17 07:18:58 -0400 | [diff] [blame] | 356 | cifs_fill_uniqueid(sb, &fattr); |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 357 | *pinode = cifs_iget(sb, &fattr); |
| 358 | if (!*pinode) |
| 359 | rc = -ENOMEM; |
| 360 | } else { |
| 361 | /* we already have inode, update it */ |
| 362 | cifs_fattr_to_inode(*pinode, &fattr); |
| 363 | } |
Steve French | 0e4bbde | 2008-05-20 19:50:46 +0000 | [diff] [blame] | 364 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 365 | return rc; |
| 366 | } |
| 367 | |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 368 | static int |
| 369 | cifs_sfu_type(struct cifs_fattr *fattr, const unsigned char *path, |
| 370 | struct cifs_sb_info *cifs_sb, int xid) |
Steve French | d6e2f2a4 | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 371 | { |
| 372 | int rc; |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 373 | int oplock = 0; |
Steve French | d6e2f2a4 | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 374 | __u16 netfid; |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 375 | struct tcon_link *tlink; |
| 376 | struct cifsTconInfo *tcon; |
Steve French | 86c96b4 | 2005-11-18 20:25:31 -0800 | [diff] [blame] | 377 | char buf[24]; |
Steve French | d6e2f2a4 | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 378 | unsigned int bytes_read; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 379 | char *pbuf; |
Steve French | d6e2f2a4 | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 380 | |
| 381 | pbuf = buf; |
| 382 | |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 383 | fattr->cf_mode &= ~S_IFMT; |
| 384 | |
| 385 | if (fattr->cf_eof == 0) { |
| 386 | fattr->cf_mode |= S_IFIFO; |
| 387 | fattr->cf_dtype = DT_FIFO; |
Steve French | d6e2f2a4 | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 388 | return 0; |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 389 | } else if (fattr->cf_eof < 8) { |
| 390 | fattr->cf_mode |= S_IFREG; |
| 391 | fattr->cf_dtype = DT_REG; |
Steve French | d6e2f2a4 | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 392 | return -EINVAL; /* EOPNOTSUPP? */ |
| 393 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 394 | |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 395 | tlink = cifs_sb_tlink(cifs_sb); |
| 396 | if (IS_ERR(tlink)) |
| 397 | return PTR_ERR(tlink); |
| 398 | tcon = tlink_tcon(tlink); |
| 399 | |
| 400 | rc = CIFSSMBOpen(xid, tcon, path, FILE_OPEN, GENERIC_READ, |
Steve French | d6e2f2a4 | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 401 | CREATE_NOT_DIR, &netfid, &oplock, NULL, |
| 402 | cifs_sb->local_nls, |
| 403 | cifs_sb->mnt_cifs_flags & |
| 404 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 405 | if (rc == 0) { |
Steve French | ec637e3 | 2005-12-12 20:53:18 -0800 | [diff] [blame] | 406 | int buf_type = CIFS_NO_BUFFER; |
Steve French | d6e2f2a4 | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 407 | /* Read header */ |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 408 | rc = CIFSSMBRead(xid, tcon, netfid, |
Steve French | 86c96b4 | 2005-11-18 20:25:31 -0800 | [diff] [blame] | 409 | 24 /* length */, 0 /* offset */, |
Steve French | ec637e3 | 2005-12-12 20:53:18 -0800 | [diff] [blame] | 410 | &bytes_read, &pbuf, &buf_type); |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 411 | if ((rc == 0) && (bytes_read >= 8)) { |
| 412 | if (memcmp("IntxBLK", pbuf, 8) == 0) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 413 | cFYI(1, "Block device"); |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 414 | fattr->cf_mode |= S_IFBLK; |
| 415 | fattr->cf_dtype = DT_BLK; |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 416 | if (bytes_read == 24) { |
Steve French | 86c96b4 | 2005-11-18 20:25:31 -0800 | [diff] [blame] | 417 | /* we have enough to decode dev num */ |
| 418 | __u64 mjr; /* major */ |
| 419 | __u64 mnr; /* minor */ |
| 420 | mjr = le64_to_cpu(*(__le64 *)(pbuf+8)); |
| 421 | mnr = le64_to_cpu(*(__le64 *)(pbuf+16)); |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 422 | fattr->cf_rdev = MKDEV(mjr, mnr); |
Steve French | 86c96b4 | 2005-11-18 20:25:31 -0800 | [diff] [blame] | 423 | } |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 424 | } else if (memcmp("IntxCHR", pbuf, 8) == 0) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 425 | cFYI(1, "Char device"); |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 426 | fattr->cf_mode |= S_IFCHR; |
| 427 | fattr->cf_dtype = DT_CHR; |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 428 | if (bytes_read == 24) { |
Steve French | 86c96b4 | 2005-11-18 20:25:31 -0800 | [diff] [blame] | 429 | /* we have enough to decode dev num */ |
| 430 | __u64 mjr; /* major */ |
| 431 | __u64 mnr; /* minor */ |
| 432 | mjr = le64_to_cpu(*(__le64 *)(pbuf+8)); |
| 433 | mnr = le64_to_cpu(*(__le64 *)(pbuf+16)); |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 434 | fattr->cf_rdev = MKDEV(mjr, mnr); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 435 | } |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 436 | } else if (memcmp("IntxLNK", pbuf, 7) == 0) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 437 | cFYI(1, "Symlink"); |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 438 | fattr->cf_mode |= S_IFLNK; |
| 439 | fattr->cf_dtype = DT_LNK; |
Steve French | 86c96b4 | 2005-11-18 20:25:31 -0800 | [diff] [blame] | 440 | } else { |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 441 | fattr->cf_mode |= S_IFREG; /* file? */ |
| 442 | fattr->cf_dtype = DT_REG; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 443 | rc = -EOPNOTSUPP; |
Steve French | 86c96b4 | 2005-11-18 20:25:31 -0800 | [diff] [blame] | 444 | } |
Steve French | 3020a1f | 2005-11-18 11:31:10 -0800 | [diff] [blame] | 445 | } else { |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 446 | fattr->cf_mode |= S_IFREG; /* then it is a file */ |
| 447 | fattr->cf_dtype = DT_REG; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 448 | rc = -EOPNOTSUPP; /* or some unknown SFU type */ |
| 449 | } |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 450 | CIFSSMBClose(xid, tcon, netfid); |
Steve French | d6e2f2a4 | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 451 | } |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 452 | cifs_put_tlink(tlink); |
Steve French | d6e2f2a4 | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 453 | return rc; |
Steve French | d6e2f2a4 | 2005-11-15 16:43:39 -0800 | [diff] [blame] | 454 | } |
| 455 | |
Steve French | 9e294f1 | 2005-11-17 16:59:21 -0800 | [diff] [blame] | 456 | #define SFBITS_MASK (S_ISVTX | S_ISGID | S_ISUID) /* SETFILEBITS valid bits */ |
| 457 | |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 458 | /* |
| 459 | * Fetch mode bits as provided by SFU. |
| 460 | * |
| 461 | * FIXME: Doesn't this clobber the type bit we got from cifs_sfu_type ? |
| 462 | */ |
| 463 | static int cifs_sfu_mode(struct cifs_fattr *fattr, const unsigned char *path, |
| 464 | struct cifs_sb_info *cifs_sb, int xid) |
Steve French | 9e294f1 | 2005-11-17 16:59:21 -0800 | [diff] [blame] | 465 | { |
Steve French | 3020a1f | 2005-11-18 11:31:10 -0800 | [diff] [blame] | 466 | #ifdef CONFIG_CIFS_XATTR |
Steve French | 9e294f1 | 2005-11-17 16:59:21 -0800 | [diff] [blame] | 467 | ssize_t rc; |
| 468 | char ea_value[4]; |
| 469 | __u32 mode; |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 470 | struct tcon_link *tlink; |
| 471 | struct cifsTconInfo *tcon; |
Steve French | 9e294f1 | 2005-11-17 16:59:21 -0800 | [diff] [blame] | 472 | |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 473 | tlink = cifs_sb_tlink(cifs_sb); |
| 474 | if (IS_ERR(tlink)) |
| 475 | return PTR_ERR(tlink); |
| 476 | tcon = tlink_tcon(tlink); |
| 477 | |
| 478 | rc = CIFSSMBQAllEAs(xid, tcon, path, "SETFILEBITS", |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 479 | ea_value, 4 /* size of buf */, cifs_sb->local_nls, |
| 480 | cifs_sb->mnt_cifs_flags & |
| 481 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 482 | cifs_put_tlink(tlink); |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 483 | if (rc < 0) |
Steve French | 9e294f1 | 2005-11-17 16:59:21 -0800 | [diff] [blame] | 484 | return (int)rc; |
| 485 | else if (rc > 3) { |
| 486 | mode = le32_to_cpu(*((__le32 *)ea_value)); |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 487 | fattr->cf_mode &= ~SFBITS_MASK; |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 488 | cFYI(1, "special bits 0%o org mode 0%o", mode, |
| 489 | fattr->cf_mode); |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 490 | fattr->cf_mode = (mode & SFBITS_MASK) | fattr->cf_mode; |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 491 | cFYI(1, "special mode bits 0%o", mode); |
Steve French | 9e294f1 | 2005-11-17 16:59:21 -0800 | [diff] [blame] | 492 | } |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 493 | |
| 494 | return 0; |
Steve French | 3020a1f | 2005-11-18 11:31:10 -0800 | [diff] [blame] | 495 | #else |
| 496 | return -EOPNOTSUPP; |
| 497 | #endif |
Steve French | 9e294f1 | 2005-11-17 16:59:21 -0800 | [diff] [blame] | 498 | } |
| 499 | |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 500 | /* Fill a cifs_fattr struct with info from FILE_ALL_INFO */ |
Steve French | f1230c9 | 2009-07-22 23:13:01 +0000 | [diff] [blame] | 501 | static void |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 502 | cifs_all_info_to_fattr(struct cifs_fattr *fattr, FILE_ALL_INFO *info, |
| 503 | struct cifs_sb_info *cifs_sb, bool adjust_tz) |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 504 | { |
Jeff Layton | 0d424ad | 2010-09-20 16:01:35 -0700 | [diff] [blame] | 505 | struct cifsTconInfo *tcon = cifs_sb_master_tcon(cifs_sb); |
| 506 | |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 507 | memset(fattr, 0, sizeof(*fattr)); |
| 508 | fattr->cf_cifsattrs = le32_to_cpu(info->Attributes); |
| 509 | if (info->DeletePending) |
| 510 | fattr->cf_flags |= CIFS_FATTR_DELETE_PENDING; |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 511 | |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 512 | if (info->LastAccessTime) |
| 513 | fattr->cf_atime = cifs_NTtimeToUnix(info->LastAccessTime); |
| 514 | else |
| 515 | fattr->cf_atime = CURRENT_TIME; |
| 516 | |
| 517 | fattr->cf_ctime = cifs_NTtimeToUnix(info->ChangeTime); |
| 518 | fattr->cf_mtime = cifs_NTtimeToUnix(info->LastWriteTime); |
| 519 | |
| 520 | if (adjust_tz) { |
Jeff Layton | 0d424ad | 2010-09-20 16:01:35 -0700 | [diff] [blame] | 521 | fattr->cf_ctime.tv_sec += tcon->ses->server->timeAdj; |
| 522 | fattr->cf_mtime.tv_sec += tcon->ses->server->timeAdj; |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 523 | } |
| 524 | |
| 525 | fattr->cf_eof = le64_to_cpu(info->EndOfFile); |
| 526 | fattr->cf_bytes = le64_to_cpu(info->AllocationSize); |
Jeff Layton | 20054bd | 2011-01-07 11:30:27 -0500 | [diff] [blame] | 527 | fattr->cf_createtime = le64_to_cpu(info->CreationTime); |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 528 | |
| 529 | if (fattr->cf_cifsattrs & ATTR_DIRECTORY) { |
| 530 | fattr->cf_mode = S_IFDIR | cifs_sb->mnt_dir_mode; |
| 531 | fattr->cf_dtype = DT_DIR; |
| 532 | } else { |
| 533 | fattr->cf_mode = S_IFREG | cifs_sb->mnt_file_mode; |
| 534 | fattr->cf_dtype = DT_REG; |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 535 | |
Jeff Layton | d0c280d | 2009-07-09 01:46:44 -0400 | [diff] [blame] | 536 | /* clear write bits if ATTR_READONLY is set */ |
| 537 | if (fattr->cf_cifsattrs & ATTR_READONLY) |
| 538 | fattr->cf_mode &= ~(S_IWUGO); |
| 539 | } |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 540 | |
| 541 | fattr->cf_nlink = le32_to_cpu(info->NumberOfLinks); |
| 542 | |
| 543 | fattr->cf_uid = cifs_sb->mnt_uid; |
| 544 | fattr->cf_gid = cifs_sb->mnt_gid; |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 545 | } |
| 546 | |
Jeff Layton | abab095 | 2010-02-12 07:44:18 -0500 | [diff] [blame] | 547 | int cifs_get_file_info(struct file *filp) |
| 548 | { |
| 549 | int rc; |
| 550 | int xid; |
| 551 | FILE_ALL_INFO find_data; |
| 552 | struct cifs_fattr fattr; |
| 553 | struct inode *inode = filp->f_path.dentry->d_inode; |
| 554 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); |
Joe Perches | c21dfb6 | 2010-07-12 13:50:14 -0700 | [diff] [blame] | 555 | struct cifsFileInfo *cfile = filp->private_data; |
Jeff Layton | 13cfb73 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 556 | struct cifsTconInfo *tcon = tlink_tcon(cfile->tlink); |
Jeff Layton | abab095 | 2010-02-12 07:44:18 -0500 | [diff] [blame] | 557 | |
| 558 | xid = GetXid(); |
| 559 | rc = CIFSSMBQFileInfo(xid, tcon, cfile->netfid, &find_data); |
| 560 | if (rc == -EOPNOTSUPP || rc == -EINVAL) { |
| 561 | /* |
| 562 | * FIXME: legacy server -- fall back to path-based call? |
Steve French | ff215713 | 2010-03-09 20:30:42 +0000 | [diff] [blame] | 563 | * for now, just skip revalidating and mark inode for |
| 564 | * immediate reval. |
| 565 | */ |
Jeff Layton | abab095 | 2010-02-12 07:44:18 -0500 | [diff] [blame] | 566 | rc = 0; |
| 567 | CIFS_I(inode)->time = 0; |
| 568 | goto cgfi_exit; |
| 569 | } else if (rc == -EREMOTE) { |
| 570 | cifs_create_dfs_fattr(&fattr, inode->i_sb); |
| 571 | rc = 0; |
| 572 | } else if (rc) |
| 573 | goto cgfi_exit; |
| 574 | |
| 575 | /* |
| 576 | * don't bother with SFU junk here -- just mark inode as needing |
| 577 | * revalidation. |
| 578 | */ |
| 579 | cifs_all_info_to_fattr(&fattr, &find_data, cifs_sb, false); |
| 580 | fattr.cf_uniqueid = CIFS_I(inode)->uniqueid; |
| 581 | fattr.cf_flags |= CIFS_FATTR_NEED_REVAL; |
| 582 | cifs_fattr_to_inode(inode, &fattr); |
| 583 | cgfi_exit: |
| 584 | FreeXid(xid); |
| 585 | return rc; |
| 586 | } |
| 587 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 588 | int cifs_get_inode_info(struct inode **pinode, |
Steve French | 646dd53 | 2008-05-15 01:50:56 +0000 | [diff] [blame] | 589 | const unsigned char *full_path, FILE_ALL_INFO *pfindData, |
Steve French | 8b1327f | 2008-03-14 22:37:16 +0000 | [diff] [blame] | 590 | struct super_block *sb, int xid, const __u16 *pfid) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 591 | { |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 592 | int rc = 0, tmprc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 593 | struct cifsTconInfo *pTcon; |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 594 | struct tcon_link *tlink; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 595 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | char *buf = NULL; |
Steve French | 5ade9de | 2008-05-02 20:56:23 +0000 | [diff] [blame] | 597 | bool adjustTZ = false; |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 598 | struct cifs_fattr fattr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 599 | |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 600 | tlink = cifs_sb_tlink(cifs_sb); |
| 601 | if (IS_ERR(tlink)) |
| 602 | return PTR_ERR(tlink); |
| 603 | pTcon = tlink_tcon(tlink); |
| 604 | |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 605 | cFYI(1, "Getting info on %s", full_path); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 606 | |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 607 | if ((pfindData == NULL) && (*pinode != NULL)) { |
| 608 | if (CIFS_I(*pinode)->clientCanCacheRead) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 609 | cFYI(1, "No need to revalidate cached inode sizes"); |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 610 | goto cgii_exit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | } |
| 612 | } |
| 613 | |
| 614 | /* if file info not passed in then get it from server */ |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 615 | if (pfindData == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 616 | buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL); |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 617 | if (buf == NULL) { |
| 618 | rc = -ENOMEM; |
| 619 | goto cgii_exit; |
| 620 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 621 | pfindData = (FILE_ALL_INFO *)buf; |
Igor Mammedov | 7962670 | 2008-03-09 03:44:18 +0000 | [diff] [blame] | 622 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 623 | /* could do find first instead but this returns more info */ |
Igor Mammedov | 7962670 | 2008-03-09 03:44:18 +0000 | [diff] [blame] | 624 | rc = CIFSSMBQPathInfo(xid, pTcon, full_path, pfindData, |
Steve French | acf1a1b | 2006-10-12 03:28:28 +0000 | [diff] [blame] | 625 | 0 /* not legacy */, |
Steve French | 6b8edfe | 2005-08-23 20:26:03 -0700 | [diff] [blame] | 626 | cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 627 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | 6b8edfe | 2005-08-23 20:26:03 -0700 | [diff] [blame] | 628 | /* BB optimize code so we do not make the above call |
| 629 | when server claims no NT SMB support and the above call |
| 630 | failed at least once - set flag in tcon or mount */ |
Steve French | 4523cc3 | 2007-04-30 20:13:06 +0000 | [diff] [blame] | 631 | if ((rc == -EOPNOTSUPP) || (rc == -EINVAL)) { |
Igor Mammedov | 7962670 | 2008-03-09 03:44:18 +0000 | [diff] [blame] | 632 | rc = SMBQueryInformation(xid, pTcon, full_path, |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 633 | pfindData, cifs_sb->local_nls, |
Steve French | 6b8edfe | 2005-08-23 20:26:03 -0700 | [diff] [blame] | 634 | cifs_sb->mnt_cifs_flags & |
| 635 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | 4b18f2a | 2008-04-29 00:06:05 +0000 | [diff] [blame] | 636 | adjustTZ = true; |
Steve French | 6b8edfe | 2005-08-23 20:26:03 -0700 | [diff] [blame] | 637 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 638 | } |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 639 | |
| 640 | if (!rc) { |
| 641 | cifs_all_info_to_fattr(&fattr, (FILE_ALL_INFO *) pfindData, |
| 642 | cifs_sb, adjustTZ); |
| 643 | } else if (rc == -EREMOTE) { |
| 644 | cifs_create_dfs_fattr(&fattr, sb); |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 645 | rc = 0; |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 646 | } else { |
Igor Mammedov | 7962670 | 2008-03-09 03:44:18 +0000 | [diff] [blame] | 647 | goto cgii_exit; |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 648 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 649 | |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 650 | /* |
| 651 | * If an inode wasn't passed in, then get the inode number |
| 652 | * |
| 653 | * Is an i_ino of zero legal? Can we use that to check if the server |
| 654 | * supports returning inode numbers? Are there other sanity checks we |
| 655 | * can use to ensure that the server is really filling in that field? |
| 656 | * |
| 657 | * We can not use the IndexNumber field by default from Windows or |
| 658 | * Samba (in ALL_INFO buf) but we can request it explicitly. The SNIA |
| 659 | * CIFS spec claims that this value is unique within the scope of a |
| 660 | * share, and the windows docs hint that it's actually unique |
| 661 | * per-machine. |
| 662 | * |
| 663 | * There may be higher info levels that work but are there Windows |
| 664 | * server or network appliances for which IndexNumber field is not |
| 665 | * guaranteed unique? |
| 666 | */ |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 667 | if (*pinode == NULL) { |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 668 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) { |
| 669 | int rc1 = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 670 | |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 671 | rc1 = CIFSGetSrvInodeNumber(xid, pTcon, |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 672 | full_path, &fattr.cf_uniqueid, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 673 | cifs_sb->local_nls, |
| 674 | cifs_sb->mnt_cifs_flags & |
| 675 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Jeff Layton | ec06aed | 2009-11-06 14:18:29 -0500 | [diff] [blame] | 676 | if (rc1 || !fattr.cf_uniqueid) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 677 | cFYI(1, "GetSrvInodeNum rc %d", rc1); |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 678 | fattr.cf_uniqueid = iunique(sb, ROOT_I); |
Jeff Layton | ec06aed | 2009-11-06 14:18:29 -0500 | [diff] [blame] | 679 | cifs_autodisable_serverino(cifs_sb); |
Jeff Layton | 132ac7b | 2009-02-10 07:33:57 -0500 | [diff] [blame] | 680 | } |
Jeff Layton | 132ac7b | 2009-02-10 07:33:57 -0500 | [diff] [blame] | 681 | } else { |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 682 | fattr.cf_uniqueid = iunique(sb, ROOT_I); |
Jeff Layton | 132ac7b | 2009-02-10 07:33:57 -0500 | [diff] [blame] | 683 | } |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 684 | } else { |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 685 | fattr.cf_uniqueid = CIFS_I(*pinode)->uniqueid; |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 686 | } |
| 687 | |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 688 | /* query for SFU type info if supported and needed */ |
| 689 | if (fattr.cf_cifsattrs & ATTR_SYSTEM && |
| 690 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) { |
| 691 | tmprc = cifs_sfu_type(&fattr, full_path, cifs_sb, xid); |
| 692 | if (tmprc) |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 693 | cFYI(1, "cifs_sfu_type failed: %d", tmprc); |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 694 | } |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 695 | |
Jeff Layton | 79df1ba | 2010-12-06 12:52:08 -0500 | [diff] [blame] | 696 | #ifdef CONFIG_CIFS_ACL |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 697 | /* fill in 0777 bits from ACL */ |
| 698 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) { |
Shirish Pargaonkar | 78415d2 | 2010-11-27 11:37:26 -0600 | [diff] [blame] | 699 | rc = cifs_acl_to_fattr(cifs_sb, &fattr, *pinode, full_path, |
| 700 | pfid); |
| 701 | if (rc) { |
| 702 | cFYI(1, "%s: Getting ACL failed with error: %d", |
| 703 | __func__, rc); |
| 704 | goto cgii_exit; |
| 705 | } |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 706 | } |
Jeff Layton | 79df1ba | 2010-12-06 12:52:08 -0500 | [diff] [blame] | 707 | #endif /* CONFIG_CIFS_ACL */ |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 708 | |
| 709 | /* fill in remaining high mode bits e.g. SUID, VTX */ |
| 710 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) |
| 711 | cifs_sfu_mode(&fattr, full_path, cifs_sb, xid); |
| 712 | |
Stefan Metzmacher | 1b12b9c | 2010-08-05 21:19:56 +0200 | [diff] [blame] | 713 | /* check for Minshall+French symlinks */ |
| 714 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS) { |
| 715 | tmprc = CIFSCheckMFSymlink(&fattr, full_path, cifs_sb, xid); |
| 716 | if (tmprc) |
| 717 | cFYI(1, "CIFSCheckMFSymlink: %d", tmprc); |
| 718 | } |
| 719 | |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 720 | if (!*pinode) { |
| 721 | *pinode = cifs_iget(sb, &fattr); |
| 722 | if (!*pinode) |
| 723 | rc = -ENOMEM; |
| 724 | } else { |
| 725 | cifs_fattr_to_inode(*pinode, &fattr); |
Steve French | b9a3260 | 2008-05-20 21:52:32 +0000 | [diff] [blame] | 726 | } |
| 727 | |
Igor Mammedov | 7962670 | 2008-03-09 03:44:18 +0000 | [diff] [blame] | 728 | cgii_exit: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 729 | kfree(buf); |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 730 | cifs_put_tlink(tlink); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 731 | return rc; |
| 732 | } |
| 733 | |
Steve French | 7f8ed42 | 2007-09-28 22:28:55 +0000 | [diff] [blame] | 734 | static const struct inode_operations cifs_ipc_inode_ops = { |
| 735 | .lookup = cifs_lookup, |
| 736 | }; |
| 737 | |
Jeff Layton | 7d161b7 | 2010-12-07 02:10:35 -0500 | [diff] [blame] | 738 | char *cifs_build_path_to_root(struct cifs_sb_info *cifs_sb, |
| 739 | struct cifsTconInfo *tcon) |
Steve French | 8be0ed4 | 2008-12-05 19:14:12 +0000 | [diff] [blame] | 740 | { |
| 741 | int pplen = cifs_sb->prepathlen; |
| 742 | int dfsplen; |
| 743 | char *full_path = NULL; |
| 744 | |
| 745 | /* if no prefix path, simply set path to the root of share to "" */ |
| 746 | if (pplen == 0) { |
| 747 | full_path = kmalloc(1, GFP_KERNEL); |
| 748 | if (full_path) |
| 749 | full_path[0] = 0; |
| 750 | return full_path; |
| 751 | } |
| 752 | |
Jeff Layton | 0d424ad | 2010-09-20 16:01:35 -0700 | [diff] [blame] | 753 | if (tcon->Flags & SMB_SHARE_IS_IN_DFS) |
| 754 | dfsplen = strnlen(tcon->treeName, MAX_TREE_SIZE + 1); |
Steve French | 8be0ed4 | 2008-12-05 19:14:12 +0000 | [diff] [blame] | 755 | else |
| 756 | dfsplen = 0; |
| 757 | |
| 758 | full_path = kmalloc(dfsplen + pplen + 1, GFP_KERNEL); |
| 759 | if (full_path == NULL) |
| 760 | return full_path; |
| 761 | |
| 762 | if (dfsplen) { |
Jeff Layton | 0d424ad | 2010-09-20 16:01:35 -0700 | [diff] [blame] | 763 | strncpy(full_path, tcon->treeName, dfsplen); |
Steve French | 8be0ed4 | 2008-12-05 19:14:12 +0000 | [diff] [blame] | 764 | /* switch slash direction in prepath depending on whether |
| 765 | * windows or posix style path names |
| 766 | */ |
| 767 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) { |
| 768 | int i; |
| 769 | for (i = 0; i < dfsplen; i++) { |
| 770 | if (full_path[i] == '\\') |
| 771 | full_path[i] = '/'; |
| 772 | } |
| 773 | } |
| 774 | } |
| 775 | strncpy(full_path + dfsplen, cifs_sb->prepath, pplen); |
| 776 | full_path[dfsplen + pplen] = 0; /* add trailing null */ |
| 777 | return full_path; |
| 778 | } |
| 779 | |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 780 | static int |
| 781 | cifs_find_inode(struct inode *inode, void *opaque) |
| 782 | { |
| 783 | struct cifs_fattr *fattr = (struct cifs_fattr *) opaque; |
| 784 | |
Jeff Layton | f30b9c1 | 2010-07-19 18:00:17 -0400 | [diff] [blame] | 785 | /* don't match inode with different uniqueid */ |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 786 | if (CIFS_I(inode)->uniqueid != fattr->cf_uniqueid) |
| 787 | return 0; |
| 788 | |
Jeff Layton | 20054bd | 2011-01-07 11:30:27 -0500 | [diff] [blame] | 789 | /* use createtime like an i_generation field */ |
| 790 | if (CIFS_I(inode)->createtime != fattr->cf_createtime) |
| 791 | return 0; |
| 792 | |
Jeff Layton | f30b9c1 | 2010-07-19 18:00:17 -0400 | [diff] [blame] | 793 | /* don't match inode of different type */ |
| 794 | if ((inode->i_mode & S_IFMT) != (fattr->cf_mode & S_IFMT)) |
| 795 | return 0; |
| 796 | |
Jeff Layton | 5acfec2 | 2010-08-02 17:43:54 -0400 | [diff] [blame] | 797 | /* if it's not a directory or has no dentries, then flag it */ |
| 798 | if (S_ISDIR(inode->i_mode) && !list_empty(&inode->i_dentry)) |
Jeff Layton | 3d69438 | 2010-05-11 14:59:55 -0400 | [diff] [blame] | 799 | fattr->cf_flags |= CIFS_FATTR_INO_COLLISION; |
Jeff Layton | 3d69438 | 2010-05-11 14:59:55 -0400 | [diff] [blame] | 800 | |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 801 | return 1; |
| 802 | } |
| 803 | |
| 804 | static int |
| 805 | cifs_init_inode(struct inode *inode, void *opaque) |
| 806 | { |
| 807 | struct cifs_fattr *fattr = (struct cifs_fattr *) opaque; |
| 808 | |
| 809 | CIFS_I(inode)->uniqueid = fattr->cf_uniqueid; |
Jeff Layton | 20054bd | 2011-01-07 11:30:27 -0500 | [diff] [blame] | 810 | CIFS_I(inode)->createtime = fattr->cf_createtime; |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 811 | return 0; |
| 812 | } |
| 813 | |
Jeff Layton | 5acfec2 | 2010-08-02 17:43:54 -0400 | [diff] [blame] | 814 | /* |
| 815 | * walk dentry list for an inode and report whether it has aliases that |
| 816 | * are hashed. We use this to determine if a directory inode can actually |
| 817 | * be used. |
| 818 | */ |
| 819 | static bool |
| 820 | inode_has_hashed_dentries(struct inode *inode) |
| 821 | { |
| 822 | struct dentry *dentry; |
| 823 | |
Nick Piggin | 873feea | 2011-01-07 17:50:06 +1100 | [diff] [blame] | 824 | spin_lock(&inode->i_lock); |
Jeff Layton | 5acfec2 | 2010-08-02 17:43:54 -0400 | [diff] [blame] | 825 | list_for_each_entry(dentry, &inode->i_dentry, d_alias) { |
| 826 | if (!d_unhashed(dentry) || IS_ROOT(dentry)) { |
Nick Piggin | 873feea | 2011-01-07 17:50:06 +1100 | [diff] [blame] | 827 | spin_unlock(&inode->i_lock); |
Jeff Layton | 5acfec2 | 2010-08-02 17:43:54 -0400 | [diff] [blame] | 828 | return true; |
| 829 | } |
| 830 | } |
Nick Piggin | 873feea | 2011-01-07 17:50:06 +1100 | [diff] [blame] | 831 | spin_unlock(&inode->i_lock); |
Jeff Layton | 5acfec2 | 2010-08-02 17:43:54 -0400 | [diff] [blame] | 832 | return false; |
| 833 | } |
| 834 | |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 835 | /* Given fattrs, get a corresponding inode */ |
| 836 | struct inode * |
| 837 | cifs_iget(struct super_block *sb, struct cifs_fattr *fattr) |
| 838 | { |
| 839 | unsigned long hash; |
| 840 | struct inode *inode; |
| 841 | |
Jeff Layton | 3d69438 | 2010-05-11 14:59:55 -0400 | [diff] [blame] | 842 | retry_iget5_locked: |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 843 | cFYI(1, "looking for uniqueid=%llu", fattr->cf_uniqueid); |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 844 | |
| 845 | /* hash down to 32-bits on 32-bit arch */ |
| 846 | hash = cifs_uniqueid_to_ino_t(fattr->cf_uniqueid); |
| 847 | |
| 848 | inode = iget5_locked(sb, hash, cifs_find_inode, cifs_init_inode, fattr); |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 849 | if (inode) { |
Jeff Layton | 5acfec2 | 2010-08-02 17:43:54 -0400 | [diff] [blame] | 850 | /* was there a potentially problematic inode collision? */ |
Jeff Layton | 3d69438 | 2010-05-11 14:59:55 -0400 | [diff] [blame] | 851 | if (fattr->cf_flags & CIFS_FATTR_INO_COLLISION) { |
Jeff Layton | 3d69438 | 2010-05-11 14:59:55 -0400 | [diff] [blame] | 852 | fattr->cf_flags &= ~CIFS_FATTR_INO_COLLISION; |
Jeff Layton | 5acfec2 | 2010-08-02 17:43:54 -0400 | [diff] [blame] | 853 | |
| 854 | if (inode_has_hashed_dentries(inode)) { |
| 855 | cifs_autodisable_serverino(CIFS_SB(sb)); |
| 856 | iput(inode); |
| 857 | fattr->cf_uniqueid = iunique(sb, ROOT_I); |
| 858 | goto retry_iget5_locked; |
| 859 | } |
Jeff Layton | 3d69438 | 2010-05-11 14:59:55 -0400 | [diff] [blame] | 860 | } |
| 861 | |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 862 | cifs_fattr_to_inode(inode, fattr); |
| 863 | if (sb->s_flags & MS_NOATIME) |
| 864 | inode->i_flags |= S_NOATIME | S_NOCMTIME; |
| 865 | if (inode->i_state & I_NEW) { |
| 866 | inode->i_ino = hash; |
Jeff Layton | 522440e | 2010-09-29 09:49:54 -0400 | [diff] [blame] | 867 | if (S_ISREG(inode->i_mode)) |
| 868 | inode->i_data.backing_dev_info = sb->s_bdi; |
Steve French | 0ccd480 | 2010-07-16 04:31:02 +0000 | [diff] [blame] | 869 | #ifdef CONFIG_CIFS_FSCACHE |
Suresh Jayaraman | 9451a9a | 2010-07-05 18:12:45 +0530 | [diff] [blame] | 870 | /* initialize per-inode cache cookie pointer */ |
| 871 | CIFS_I(inode)->fscache = NULL; |
Steve French | 0ccd480 | 2010-07-16 04:31:02 +0000 | [diff] [blame] | 872 | #endif |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 873 | unlock_new_inode(inode); |
| 874 | } |
| 875 | } |
| 876 | |
| 877 | return inode; |
| 878 | } |
| 879 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 880 | /* gets root inode */ |
Shirish Pargaonkar | 9b6763e | 2011-02-21 23:56:59 -0600 | [diff] [blame] | 881 | struct inode *cifs_root_iget(struct super_block *sb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 882 | { |
David Howells | ce634ab | 2008-02-07 00:15:33 -0800 | [diff] [blame] | 883 | int xid; |
Jeff Layton | 0d424ad | 2010-09-20 16:01:35 -0700 | [diff] [blame] | 884 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 885 | struct inode *inode = NULL; |
David Howells | ce634ab | 2008-02-07 00:15:33 -0800 | [diff] [blame] | 886 | long rc; |
Steve French | 8be0ed4 | 2008-12-05 19:14:12 +0000 | [diff] [blame] | 887 | char *full_path; |
Jeff Layton | 0d424ad | 2010-09-20 16:01:35 -0700 | [diff] [blame] | 888 | struct cifsTconInfo *tcon = cifs_sb_master_tcon(cifs_sb); |
David Howells | ce634ab | 2008-02-07 00:15:33 -0800 | [diff] [blame] | 889 | |
Jeff Layton | 7d161b7 | 2010-12-07 02:10:35 -0500 | [diff] [blame] | 890 | full_path = cifs_build_path_to_root(cifs_sb, tcon); |
Steve French | 8be0ed4 | 2008-12-05 19:14:12 +0000 | [diff] [blame] | 891 | if (full_path == NULL) |
| 892 | return ERR_PTR(-ENOMEM); |
Steve French | c18c842 | 2007-07-18 23:21:09 +0000 | [diff] [blame] | 893 | |
Steve French | 8be0ed4 | 2008-12-05 19:14:12 +0000 | [diff] [blame] | 894 | xid = GetXid(); |
Jeff Layton | 0d424ad | 2010-09-20 16:01:35 -0700 | [diff] [blame] | 895 | if (tcon->unix_ext) |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 896 | rc = cifs_get_inode_info_unix(&inode, full_path, sb, xid); |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 897 | else |
| 898 | rc = cifs_get_inode_info(&inode, full_path, NULL, sb, |
Steve French | 8be0ed4 | 2008-12-05 19:14:12 +0000 | [diff] [blame] | 899 | xid, NULL); |
Jeff Layton | 0b8f18e | 2009-07-09 01:46:37 -0400 | [diff] [blame] | 900 | |
Oskar Schirmer | a7851ce | 2010-11-10 21:06:13 +0000 | [diff] [blame] | 901 | if (!inode) { |
| 902 | inode = ERR_PTR(rc); |
| 903 | goto out; |
| 904 | } |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 905 | |
Steve French | 0ccd480 | 2010-07-16 04:31:02 +0000 | [diff] [blame] | 906 | #ifdef CONFIG_CIFS_FSCACHE |
Suresh Jayaraman | d03382c | 2010-07-05 18:12:27 +0530 | [diff] [blame] | 907 | /* populate tcon->resource_id */ |
Jeff Layton | 0d424ad | 2010-09-20 16:01:35 -0700 | [diff] [blame] | 908 | tcon->resource_id = CIFS_I(inode)->uniqueid; |
Steve French | 0ccd480 | 2010-07-16 04:31:02 +0000 | [diff] [blame] | 909 | #endif |
Suresh Jayaraman | d03382c | 2010-07-05 18:12:27 +0530 | [diff] [blame] | 910 | |
Jeff Layton | 0d424ad | 2010-09-20 16:01:35 -0700 | [diff] [blame] | 911 | if (rc && tcon->ipc) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 912 | cFYI(1, "ipc connection - fake read inode"); |
Steve French | 7f8ed42 | 2007-09-28 22:28:55 +0000 | [diff] [blame] | 913 | inode->i_mode |= S_IFDIR; |
| 914 | inode->i_nlink = 2; |
| 915 | inode->i_op = &cifs_ipc_inode_ops; |
| 916 | inode->i_fop = &simple_dir_operations; |
| 917 | inode->i_uid = cifs_sb->mnt_uid; |
| 918 | inode->i_gid = cifs_sb->mnt_gid; |
Steve French | ad66133 | 2008-08-12 14:14:40 +0000 | [diff] [blame] | 919 | } else if (rc) { |
David Howells | ce634ab | 2008-02-07 00:15:33 -0800 | [diff] [blame] | 920 | iget_failed(inode); |
Oskar Schirmer | a7851ce | 2010-11-10 21:06:13 +0000 | [diff] [blame] | 921 | inode = ERR_PTR(rc); |
Steve French | 7f8ed42 | 2007-09-28 22:28:55 +0000 | [diff] [blame] | 922 | } |
| 923 | |
Oskar Schirmer | a7851ce | 2010-11-10 21:06:13 +0000 | [diff] [blame] | 924 | out: |
Steve French | 8be0ed4 | 2008-12-05 19:14:12 +0000 | [diff] [blame] | 925 | kfree(full_path); |
David Howells | ce634ab | 2008-02-07 00:15:33 -0800 | [diff] [blame] | 926 | /* can not call macro FreeXid here since in a void func |
| 927 | * TODO: This is no longer true |
| 928 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 929 | _FreeXid(xid); |
David Howells | ce634ab | 2008-02-07 00:15:33 -0800 | [diff] [blame] | 930 | return inode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 931 | } |
| 932 | |
Steve French | 388e57b | 2008-09-16 23:50:58 +0000 | [diff] [blame] | 933 | static int |
| 934 | cifs_set_file_info(struct inode *inode, struct iattr *attrs, int xid, |
| 935 | char *full_path, __u32 dosattr) |
| 936 | { |
| 937 | int rc; |
| 938 | int oplock = 0; |
| 939 | __u16 netfid; |
| 940 | __u32 netpid; |
| 941 | bool set_time = false; |
| 942 | struct cifsFileInfo *open_file; |
| 943 | struct cifsInodeInfo *cifsInode = CIFS_I(inode); |
| 944 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 945 | struct tcon_link *tlink = NULL; |
Jeff Layton | ba00ba6 | 2010-09-20 16:01:31 -0700 | [diff] [blame] | 946 | struct cifsTconInfo *pTcon; |
Steve French | 388e57b | 2008-09-16 23:50:58 +0000 | [diff] [blame] | 947 | FILE_BASIC_INFO info_buf; |
| 948 | |
Steve French | 1adcb71 | 2009-02-25 14:19:56 +0000 | [diff] [blame] | 949 | if (attrs == NULL) |
| 950 | return -EINVAL; |
| 951 | |
Steve French | 388e57b | 2008-09-16 23:50:58 +0000 | [diff] [blame] | 952 | if (attrs->ia_valid & ATTR_ATIME) { |
| 953 | set_time = true; |
| 954 | info_buf.LastAccessTime = |
| 955 | cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_atime)); |
| 956 | } else |
| 957 | info_buf.LastAccessTime = 0; |
| 958 | |
| 959 | if (attrs->ia_valid & ATTR_MTIME) { |
| 960 | set_time = true; |
| 961 | info_buf.LastWriteTime = |
| 962 | cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_mtime)); |
| 963 | } else |
| 964 | info_buf.LastWriteTime = 0; |
| 965 | |
| 966 | /* |
| 967 | * Samba throws this field away, but windows may actually use it. |
| 968 | * Do not set ctime unless other time stamps are changed explicitly |
| 969 | * (i.e. by utimes()) since we would then have a mix of client and |
| 970 | * server times. |
| 971 | */ |
| 972 | if (set_time && (attrs->ia_valid & ATTR_CTIME)) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 973 | cFYI(1, "CIFS - CTIME changed"); |
Steve French | 388e57b | 2008-09-16 23:50:58 +0000 | [diff] [blame] | 974 | info_buf.ChangeTime = |
| 975 | cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_ctime)); |
| 976 | } else |
| 977 | info_buf.ChangeTime = 0; |
| 978 | |
| 979 | info_buf.CreationTime = 0; /* don't change */ |
| 980 | info_buf.Attributes = cpu_to_le32(dosattr); |
| 981 | |
| 982 | /* |
| 983 | * If the file is already open for write, just use that fileid |
| 984 | */ |
Jeff Layton | 6508d90 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 985 | open_file = find_writable_file(cifsInode, true); |
Steve French | 388e57b | 2008-09-16 23:50:58 +0000 | [diff] [blame] | 986 | if (open_file) { |
| 987 | netfid = open_file->netfid; |
| 988 | netpid = open_file->pid; |
Jeff Layton | 13cfb73 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 989 | pTcon = tlink_tcon(open_file->tlink); |
Steve French | 388e57b | 2008-09-16 23:50:58 +0000 | [diff] [blame] | 990 | goto set_via_filehandle; |
| 991 | } |
| 992 | |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 993 | tlink = cifs_sb_tlink(cifs_sb); |
| 994 | if (IS_ERR(tlink)) { |
| 995 | rc = PTR_ERR(tlink); |
| 996 | tlink = NULL; |
| 997 | goto out; |
| 998 | } |
| 999 | pTcon = tlink_tcon(tlink); |
Jeff Layton | ba00ba6 | 2010-09-20 16:01:31 -0700 | [diff] [blame] | 1000 | |
Steve French | 388e57b | 2008-09-16 23:50:58 +0000 | [diff] [blame] | 1001 | /* |
| 1002 | * NT4 apparently returns success on this call, but it doesn't |
| 1003 | * really work. |
| 1004 | */ |
| 1005 | if (!(pTcon->ses->flags & CIFS_SES_NT4)) { |
| 1006 | rc = CIFSSMBSetPathInfo(xid, pTcon, full_path, |
| 1007 | &info_buf, cifs_sb->local_nls, |
| 1008 | cifs_sb->mnt_cifs_flags & |
| 1009 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Jeff Layton | 6b37faa | 2008-10-06 21:54:41 +0000 | [diff] [blame] | 1010 | if (rc == 0) { |
| 1011 | cifsInode->cifsAttrs = dosattr; |
| 1012 | goto out; |
| 1013 | } else if (rc != -EOPNOTSUPP && rc != -EINVAL) |
Steve French | 388e57b | 2008-09-16 23:50:58 +0000 | [diff] [blame] | 1014 | goto out; |
| 1015 | } |
| 1016 | |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1017 | cFYI(1, "calling SetFileInfo since SetPathInfo for " |
| 1018 | "times not supported by this server"); |
Steve French | 388e57b | 2008-09-16 23:50:58 +0000 | [diff] [blame] | 1019 | rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN, |
| 1020 | SYNCHRONIZE | FILE_WRITE_ATTRIBUTES, |
| 1021 | CREATE_NOT_DIR, &netfid, &oplock, |
| 1022 | NULL, cifs_sb->local_nls, |
| 1023 | cifs_sb->mnt_cifs_flags & |
| 1024 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
| 1025 | |
| 1026 | if (rc != 0) { |
| 1027 | if (rc == -EIO) |
| 1028 | rc = -EINVAL; |
| 1029 | goto out; |
| 1030 | } |
| 1031 | |
| 1032 | netpid = current->tgid; |
| 1033 | |
| 1034 | set_via_filehandle: |
| 1035 | rc = CIFSSMBSetFileInfo(xid, pTcon, &info_buf, netfid, netpid); |
Steve French | d388908 | 2008-09-24 19:22:52 +0000 | [diff] [blame] | 1036 | if (!rc) |
| 1037 | cifsInode->cifsAttrs = dosattr; |
| 1038 | |
Steve French | 388e57b | 2008-09-16 23:50:58 +0000 | [diff] [blame] | 1039 | if (open_file == NULL) |
| 1040 | CIFSSMBClose(xid, pTcon, netfid); |
| 1041 | else |
Dave Kleikamp | 6ab409b | 2009-08-31 11:07:12 -0400 | [diff] [blame] | 1042 | cifsFileInfo_put(open_file); |
Steve French | 388e57b | 2008-09-16 23:50:58 +0000 | [diff] [blame] | 1043 | out: |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1044 | if (tlink != NULL) |
| 1045 | cifs_put_tlink(tlink); |
Steve French | 388e57b | 2008-09-16 23:50:58 +0000 | [diff] [blame] | 1046 | return rc; |
| 1047 | } |
| 1048 | |
Jeff Layton | a12a1ac | 2008-09-23 11:48:35 -0400 | [diff] [blame] | 1049 | /* |
| 1050 | * open the given file (if it isn't already), set the DELETE_ON_CLOSE bit |
| 1051 | * and rename it to a random name that hopefully won't conflict with |
| 1052 | * anything else. |
| 1053 | */ |
| 1054 | static int |
Steve French | 3270958 | 2008-10-20 00:44:19 +0000 | [diff] [blame] | 1055 | cifs_rename_pending_delete(char *full_path, struct dentry *dentry, int xid) |
Jeff Layton | a12a1ac | 2008-09-23 11:48:35 -0400 | [diff] [blame] | 1056 | { |
| 1057 | int oplock = 0; |
| 1058 | int rc; |
| 1059 | __u16 netfid; |
Steve French | 3270958 | 2008-10-20 00:44:19 +0000 | [diff] [blame] | 1060 | struct inode *inode = dentry->d_inode; |
Jeff Layton | a12a1ac | 2008-09-23 11:48:35 -0400 | [diff] [blame] | 1061 | struct cifsInodeInfo *cifsInode = CIFS_I(inode); |
| 1062 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1063 | struct tcon_link *tlink; |
| 1064 | struct cifsTconInfo *tcon; |
Steve French | 3270958 | 2008-10-20 00:44:19 +0000 | [diff] [blame] | 1065 | __u32 dosattr, origattr; |
| 1066 | FILE_BASIC_INFO *info_buf = NULL; |
Jeff Layton | a12a1ac | 2008-09-23 11:48:35 -0400 | [diff] [blame] | 1067 | |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1068 | tlink = cifs_sb_tlink(cifs_sb); |
| 1069 | if (IS_ERR(tlink)) |
| 1070 | return PTR_ERR(tlink); |
| 1071 | tcon = tlink_tcon(tlink); |
| 1072 | |
Jeff Layton | a12a1ac | 2008-09-23 11:48:35 -0400 | [diff] [blame] | 1073 | rc = CIFSSMBOpen(xid, tcon, full_path, FILE_OPEN, |
Jeff Layton | dd1db2d | 2008-10-16 19:27:12 -0400 | [diff] [blame] | 1074 | DELETE|FILE_WRITE_ATTRIBUTES, CREATE_NOT_DIR, |
Jeff Layton | a12a1ac | 2008-09-23 11:48:35 -0400 | [diff] [blame] | 1075 | &netfid, &oplock, NULL, cifs_sb->local_nls, |
| 1076 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); |
| 1077 | if (rc != 0) |
| 1078 | goto out; |
| 1079 | |
Steve French | 3270958 | 2008-10-20 00:44:19 +0000 | [diff] [blame] | 1080 | origattr = cifsInode->cifsAttrs; |
| 1081 | if (origattr == 0) |
| 1082 | origattr |= ATTR_NORMAL; |
| 1083 | |
| 1084 | dosattr = origattr & ~ATTR_READONLY; |
Jeff Layton | a12a1ac | 2008-09-23 11:48:35 -0400 | [diff] [blame] | 1085 | if (dosattr == 0) |
| 1086 | dosattr |= ATTR_NORMAL; |
| 1087 | dosattr |= ATTR_HIDDEN; |
| 1088 | |
Steve French | 3270958 | 2008-10-20 00:44:19 +0000 | [diff] [blame] | 1089 | /* set ATTR_HIDDEN and clear ATTR_READONLY, but only if needed */ |
| 1090 | if (dosattr != origattr) { |
| 1091 | info_buf = kzalloc(sizeof(*info_buf), GFP_KERNEL); |
| 1092 | if (info_buf == NULL) { |
| 1093 | rc = -ENOMEM; |
| 1094 | goto out_close; |
| 1095 | } |
| 1096 | info_buf->Attributes = cpu_to_le32(dosattr); |
| 1097 | rc = CIFSSMBSetFileInfo(xid, tcon, info_buf, netfid, |
| 1098 | current->tgid); |
| 1099 | /* although we would like to mark the file hidden |
| 1100 | if that fails we will still try to rename it */ |
Steve French | 4134609 | 2008-10-20 18:24:42 +0000 | [diff] [blame] | 1101 | if (rc != 0) |
Steve French | 3270958 | 2008-10-20 00:44:19 +0000 | [diff] [blame] | 1102 | cifsInode->cifsAttrs = dosattr; |
| 1103 | else |
| 1104 | dosattr = origattr; /* since not able to change them */ |
Jeff Layton | a12a1ac | 2008-09-23 11:48:35 -0400 | [diff] [blame] | 1105 | } |
Jeff Layton | a12a1ac | 2008-09-23 11:48:35 -0400 | [diff] [blame] | 1106 | |
Jeff Layton | dd1db2d | 2008-10-16 19:27:12 -0400 | [diff] [blame] | 1107 | /* rename the file */ |
| 1108 | rc = CIFSSMBRenameOpenFile(xid, tcon, netfid, NULL, cifs_sb->local_nls, |
Jeff Layton | a12a1ac | 2008-09-23 11:48:35 -0400 | [diff] [blame] | 1109 | cifs_sb->mnt_cifs_flags & |
| 1110 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | 3270958 | 2008-10-20 00:44:19 +0000 | [diff] [blame] | 1111 | if (rc != 0) { |
| 1112 | rc = -ETXTBSY; |
| 1113 | goto undo_setattr; |
| 1114 | } |
Jeff Layton | 6d22f09 | 2008-09-23 11:48:35 -0400 | [diff] [blame] | 1115 | |
Steve French | 3270958 | 2008-10-20 00:44:19 +0000 | [diff] [blame] | 1116 | /* try to set DELETE_ON_CLOSE */ |
| 1117 | if (!cifsInode->delete_pending) { |
| 1118 | rc = CIFSSMBSetFileDisposition(xid, tcon, true, netfid, |
| 1119 | current->tgid); |
| 1120 | /* |
| 1121 | * some samba versions return -ENOENT when we try to set the |
| 1122 | * file disposition here. Likely a samba bug, but work around |
| 1123 | * it for now. This means that some cifsXXX files may hang |
| 1124 | * around after they shouldn't. |
| 1125 | * |
| 1126 | * BB: remove this hack after more servers have the fix |
| 1127 | */ |
| 1128 | if (rc == -ENOENT) |
| 1129 | rc = 0; |
| 1130 | else if (rc != 0) { |
| 1131 | rc = -ETXTBSY; |
| 1132 | goto undo_rename; |
| 1133 | } |
| 1134 | cifsInode->delete_pending = true; |
| 1135 | } |
Jeff Layton | 7ce86d5 | 2008-09-24 11:32:59 -0400 | [diff] [blame] | 1136 | |
Jeff Layton | a12a1ac | 2008-09-23 11:48:35 -0400 | [diff] [blame] | 1137 | out_close: |
| 1138 | CIFSSMBClose(xid, tcon, netfid); |
| 1139 | out: |
Steve French | 3270958 | 2008-10-20 00:44:19 +0000 | [diff] [blame] | 1140 | kfree(info_buf); |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1141 | cifs_put_tlink(tlink); |
Jeff Layton | a12a1ac | 2008-09-23 11:48:35 -0400 | [diff] [blame] | 1142 | return rc; |
Steve French | 3270958 | 2008-10-20 00:44:19 +0000 | [diff] [blame] | 1143 | |
| 1144 | /* |
| 1145 | * reset everything back to the original state. Don't bother |
| 1146 | * dealing with errors here since we can't do anything about |
| 1147 | * them anyway. |
| 1148 | */ |
| 1149 | undo_rename: |
| 1150 | CIFSSMBRenameOpenFile(xid, tcon, netfid, dentry->d_name.name, |
| 1151 | cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & |
| 1152 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
| 1153 | undo_setattr: |
| 1154 | if (dosattr != origattr) { |
| 1155 | info_buf->Attributes = cpu_to_le32(origattr); |
| 1156 | if (!CIFSSMBSetFileInfo(xid, tcon, info_buf, netfid, |
| 1157 | current->tgid)) |
| 1158 | cifsInode->cifsAttrs = origattr; |
| 1159 | } |
| 1160 | |
| 1161 | goto out_close; |
Jeff Layton | a12a1ac | 2008-09-23 11:48:35 -0400 | [diff] [blame] | 1162 | } |
| 1163 | |
Steve French | ff69452 | 2009-04-20 19:45:13 +0000 | [diff] [blame] | 1164 | |
| 1165 | /* |
| 1166 | * If dentry->d_inode is null (usually meaning the cached dentry |
| 1167 | * is a negative dentry) then we would attempt a standard SMB delete, but |
André Goddard Rosa | af901ca | 2009-11-14 13:09:05 -0200 | [diff] [blame] | 1168 | * if that fails we can not attempt the fall back mechanisms on EACCESS |
| 1169 | * but will return the EACCESS to the caller. Note that the VFS does not call |
Steve French | ff69452 | 2009-04-20 19:45:13 +0000 | [diff] [blame] | 1170 | * unlink on negative dentries currently. |
| 1171 | */ |
Jeff Layton | 5f0319a | 2008-09-16 14:05:16 -0400 | [diff] [blame] | 1172 | int cifs_unlink(struct inode *dir, struct dentry *dentry) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1173 | { |
| 1174 | int rc = 0; |
| 1175 | int xid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1176 | char *full_path = NULL; |
Jeff Layton | 5f0319a | 2008-09-16 14:05:16 -0400 | [diff] [blame] | 1177 | struct inode *inode = dentry->d_inode; |
Steve French | ff69452 | 2009-04-20 19:45:13 +0000 | [diff] [blame] | 1178 | struct cifsInodeInfo *cifs_inode; |
Jeff Layton | 5f0319a | 2008-09-16 14:05:16 -0400 | [diff] [blame] | 1179 | struct super_block *sb = dir->i_sb; |
| 1180 | struct cifs_sb_info *cifs_sb = CIFS_SB(sb); |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1181 | struct tcon_link *tlink; |
| 1182 | struct cifsTconInfo *tcon; |
Steve French | 6050247 | 2008-10-07 18:42:52 +0000 | [diff] [blame] | 1183 | struct iattr *attrs = NULL; |
| 1184 | __u32 dosattr = 0, origattr = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1185 | |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1186 | cFYI(1, "cifs_unlink, dir=0x%p, dentry=0x%p", dir, dentry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1187 | |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1188 | tlink = cifs_sb_tlink(cifs_sb); |
| 1189 | if (IS_ERR(tlink)) |
| 1190 | return PTR_ERR(tlink); |
| 1191 | tcon = tlink_tcon(tlink); |
| 1192 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1193 | xid = GetXid(); |
| 1194 | |
Jeff Layton | 5f0319a | 2008-09-16 14:05:16 -0400 | [diff] [blame] | 1195 | /* Unlink can be called from rename so we can not take the |
| 1196 | * sb->s_vfs_rename_mutex here */ |
| 1197 | full_path = build_path_from_dentry(dentry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1198 | if (full_path == NULL) { |
Suresh Jayaraman | 0f3bc09 | 2009-06-25 18:12:34 +0530 | [diff] [blame] | 1199 | rc = -ENOMEM; |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1200 | goto unlink_out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1201 | } |
Steve French | 2d785a5 | 2007-07-15 01:48:57 +0000 | [diff] [blame] | 1202 | |
Jeff Layton | 5f0319a | 2008-09-16 14:05:16 -0400 | [diff] [blame] | 1203 | if ((tcon->ses->capabilities & CAP_UNIX) && |
Steve French | 2d785a5 | 2007-07-15 01:48:57 +0000 | [diff] [blame] | 1204 | (CIFS_UNIX_POSIX_PATH_OPS_CAP & |
Jeff Layton | 5f0319a | 2008-09-16 14:05:16 -0400 | [diff] [blame] | 1205 | le64_to_cpu(tcon->fsUnixInfo.Capability))) { |
| 1206 | rc = CIFSPOSIXDelFile(xid, tcon, full_path, |
Steve French | 2d785a5 | 2007-07-15 01:48:57 +0000 | [diff] [blame] | 1207 | SMB_POSIX_UNLINK_FILE_TARGET, cifs_sb->local_nls, |
| 1208 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1209 | cFYI(1, "posix del rc %d", rc); |
Steve French | 2d785a5 | 2007-07-15 01:48:57 +0000 | [diff] [blame] | 1210 | if ((rc == 0) || (rc == -ENOENT)) |
| 1211 | goto psx_del_no_retry; |
| 1212 | } |
| 1213 | |
Steve French | 6050247 | 2008-10-07 18:42:52 +0000 | [diff] [blame] | 1214 | retry_std_delete: |
Jeff Layton | 5f0319a | 2008-09-16 14:05:16 -0400 | [diff] [blame] | 1215 | rc = CIFSSMBDelFile(xid, tcon, full_path, cifs_sb->local_nls, |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 1216 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | 6050247 | 2008-10-07 18:42:52 +0000 | [diff] [blame] | 1217 | |
Steve French | 2d785a5 | 2007-07-15 01:48:57 +0000 | [diff] [blame] | 1218 | psx_del_no_retry: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1219 | if (!rc) { |
Jeff Layton | 5f0319a | 2008-09-16 14:05:16 -0400 | [diff] [blame] | 1220 | if (inode) |
| 1221 | drop_nlink(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1222 | } else if (rc == -ENOENT) { |
Jeff Layton | 5f0319a | 2008-09-16 14:05:16 -0400 | [diff] [blame] | 1223 | d_drop(dentry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1224 | } else if (rc == -ETXTBSY) { |
Steve French | 3270958 | 2008-10-20 00:44:19 +0000 | [diff] [blame] | 1225 | rc = cifs_rename_pending_delete(full_path, dentry, xid); |
Jeff Layton | a12a1ac | 2008-09-23 11:48:35 -0400 | [diff] [blame] | 1226 | if (rc == 0) |
| 1227 | drop_nlink(inode); |
Steve French | ff69452 | 2009-04-20 19:45:13 +0000 | [diff] [blame] | 1228 | } else if ((rc == -EACCES) && (dosattr == 0) && inode) { |
Steve French | 388e57b | 2008-09-16 23:50:58 +0000 | [diff] [blame] | 1229 | attrs = kzalloc(sizeof(*attrs), GFP_KERNEL); |
| 1230 | if (attrs == NULL) { |
| 1231 | rc = -ENOMEM; |
| 1232 | goto out_reval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1233 | } |
Steve French | 388e57b | 2008-09-16 23:50:58 +0000 | [diff] [blame] | 1234 | |
| 1235 | /* try to reset dos attributes */ |
Steve French | ff69452 | 2009-04-20 19:45:13 +0000 | [diff] [blame] | 1236 | cifs_inode = CIFS_I(inode); |
| 1237 | origattr = cifs_inode->cifsAttrs; |
Steve French | 6050247 | 2008-10-07 18:42:52 +0000 | [diff] [blame] | 1238 | if (origattr == 0) |
| 1239 | origattr |= ATTR_NORMAL; |
| 1240 | dosattr = origattr & ~ATTR_READONLY; |
Steve French | 388e57b | 2008-09-16 23:50:58 +0000 | [diff] [blame] | 1241 | if (dosattr == 0) |
| 1242 | dosattr |= ATTR_NORMAL; |
| 1243 | dosattr |= ATTR_HIDDEN; |
| 1244 | |
| 1245 | rc = cifs_set_file_info(inode, attrs, xid, full_path, dosattr); |
Steve French | 388e57b | 2008-09-16 23:50:58 +0000 | [diff] [blame] | 1246 | if (rc != 0) |
| 1247 | goto out_reval; |
Steve French | 6050247 | 2008-10-07 18:42:52 +0000 | [diff] [blame] | 1248 | |
| 1249 | goto retry_std_delete; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1250 | } |
Steve French | 6050247 | 2008-10-07 18:42:52 +0000 | [diff] [blame] | 1251 | |
| 1252 | /* undo the setattr if we errored out and it's needed */ |
| 1253 | if (rc != 0 && dosattr != 0) |
| 1254 | cifs_set_file_info(inode, attrs, xid, full_path, origattr); |
| 1255 | |
Steve French | 388e57b | 2008-09-16 23:50:58 +0000 | [diff] [blame] | 1256 | out_reval: |
Jeff Layton | 5f0319a | 2008-09-16 14:05:16 -0400 | [diff] [blame] | 1257 | if (inode) { |
Steve French | ff69452 | 2009-04-20 19:45:13 +0000 | [diff] [blame] | 1258 | cifs_inode = CIFS_I(inode); |
| 1259 | cifs_inode->time = 0; /* will force revalidate to get info |
Steve French | b2aeb9d | 2005-05-17 13:16:18 -0500 | [diff] [blame] | 1260 | when needed */ |
Jeff Layton | 5f0319a | 2008-09-16 14:05:16 -0400 | [diff] [blame] | 1261 | inode->i_ctime = current_fs_time(sb); |
Steve French | b2aeb9d | 2005-05-17 13:16:18 -0500 | [diff] [blame] | 1262 | } |
Jeff Layton | 5f0319a | 2008-09-16 14:05:16 -0400 | [diff] [blame] | 1263 | dir->i_ctime = dir->i_mtime = current_fs_time(sb); |
Steve French | ff69452 | 2009-04-20 19:45:13 +0000 | [diff] [blame] | 1264 | cifs_inode = CIFS_I(dir); |
Steve French | 6050247 | 2008-10-07 18:42:52 +0000 | [diff] [blame] | 1265 | CIFS_I(dir)->time = 0; /* force revalidate of dir as well */ |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1266 | unlink_out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1267 | kfree(full_path); |
Steve French | 6050247 | 2008-10-07 18:42:52 +0000 | [diff] [blame] | 1268 | kfree(attrs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1269 | FreeXid(xid); |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1270 | cifs_put_tlink(tlink); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1271 | return rc; |
| 1272 | } |
| 1273 | |
| 1274 | int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode) |
| 1275 | { |
Jeff Layton | 6b37faa | 2008-10-06 21:54:41 +0000 | [diff] [blame] | 1276 | int rc = 0, tmprc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1277 | int xid; |
| 1278 | struct cifs_sb_info *cifs_sb; |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1279 | struct tcon_link *tlink; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1280 | struct cifsTconInfo *pTcon; |
| 1281 | char *full_path = NULL; |
| 1282 | struct inode *newinode = NULL; |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 1283 | struct cifs_fattr fattr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1284 | |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1285 | cFYI(1, "In cifs_mkdir, mode = 0x%x inode = 0x%p", mode, inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1286 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1287 | cifs_sb = CIFS_SB(inode->i_sb); |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1288 | tlink = cifs_sb_tlink(cifs_sb); |
| 1289 | if (IS_ERR(tlink)) |
| 1290 | return PTR_ERR(tlink); |
| 1291 | pTcon = tlink_tcon(tlink); |
| 1292 | |
| 1293 | xid = GetXid(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1294 | |
Steve French | 7f57356 | 2005-08-30 11:32:14 -0700 | [diff] [blame] | 1295 | full_path = build_path_from_dentry(direntry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1296 | if (full_path == NULL) { |
Suresh Jayaraman | 0f3bc09 | 2009-06-25 18:12:34 +0530 | [diff] [blame] | 1297 | rc = -ENOMEM; |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1298 | goto mkdir_out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1299 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1300 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1301 | if ((pTcon->ses->capabilities & CAP_UNIX) && |
| 1302 | (CIFS_UNIX_POSIX_PATH_OPS_CAP & |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 1303 | le64_to_cpu(pTcon->fsUnixInfo.Capability))) { |
| 1304 | u32 oplock = 0; |
Steve French | f6d0998 | 2008-01-08 23:18:22 +0000 | [diff] [blame] | 1305 | FILE_UNIX_BASIC_INFO *pInfo = |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 1306 | kzalloc(sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1307 | if (pInfo == NULL) { |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 1308 | rc = -ENOMEM; |
| 1309 | goto mkdir_out; |
| 1310 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 1311 | |
Al Viro | ce3b0f8 | 2009-03-29 19:08:22 -0400 | [diff] [blame] | 1312 | mode &= ~current_umask(); |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 1313 | rc = CIFSPOSIXCreate(xid, pTcon, SMB_O_DIRECTORY | SMB_O_CREAT, |
| 1314 | mode, NULL /* netfid */, pInfo, &oplock, |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1315 | full_path, cifs_sb->local_nls, |
| 1316 | cifs_sb->mnt_cifs_flags & |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 1317 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | c45d707 | 2007-09-17 02:04:21 +0000 | [diff] [blame] | 1318 | if (rc == -EOPNOTSUPP) { |
| 1319 | kfree(pInfo); |
| 1320 | goto mkdir_retry_old; |
| 1321 | } else if (rc) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1322 | cFYI(1, "posix mkdir returned 0x%x", rc); |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 1323 | d_drop(direntry); |
| 1324 | } else { |
Cyril Gorcunov | 8f2376a | 2007-10-14 17:58:43 +0000 | [diff] [blame] | 1325 | if (pInfo->Type == cpu_to_le32(-1)) { |
| 1326 | /* no return info, go query for it */ |
Steve French | 5a07cdf | 2007-09-16 23:12:47 +0000 | [diff] [blame] | 1327 | kfree(pInfo); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1328 | goto mkdir_get_info; |
Steve French | 5a07cdf | 2007-09-16 23:12:47 +0000 | [diff] [blame] | 1329 | } |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1330 | /*BB check (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID ) to see if need |
| 1331 | to set uid/gid */ |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 1332 | inc_nlink(inode); |
Steve French | cbac3cb | 2007-04-25 11:46:06 +0000 | [diff] [blame] | 1333 | |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 1334 | cifs_unix_basic_to_fattr(&fattr, pInfo, cifs_sb); |
Jeff Layton | 4065c80 | 2010-05-17 07:18:58 -0400 | [diff] [blame] | 1335 | cifs_fill_uniqueid(inode->i_sb, &fattr); |
Jeff Layton | cc0bad7 | 2009-06-25 00:56:52 -0400 | [diff] [blame] | 1336 | newinode = cifs_iget(inode->i_sb, &fattr); |
| 1337 | if (!newinode) { |
Steve French | 5a07cdf | 2007-09-16 23:12:47 +0000 | [diff] [blame] | 1338 | kfree(pInfo); |
Steve French | cbac3cb | 2007-04-25 11:46:06 +0000 | [diff] [blame] | 1339 | goto mkdir_get_info; |
Steve French | 5a07cdf | 2007-09-16 23:12:47 +0000 | [diff] [blame] | 1340 | } |
Jeff Layton | 6b37faa | 2008-10-06 21:54:41 +0000 | [diff] [blame] | 1341 | |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 1342 | d_instantiate(direntry, newinode); |
Steve French | cbac3cb | 2007-04-25 11:46:06 +0000 | [diff] [blame] | 1343 | |
Steve French | cbac3cb | 2007-04-25 11:46:06 +0000 | [diff] [blame] | 1344 | #ifdef CONFIG_CIFS_DEBUG2 |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1345 | cFYI(1, "instantiated dentry %p %s to inode %p", |
| 1346 | direntry, direntry->d_name.name, newinode); |
Steve French | cbac3cb | 2007-04-25 11:46:06 +0000 | [diff] [blame] | 1347 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1348 | if (newinode->i_nlink != 2) |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1349 | cFYI(1, "unexpected number of links %d", |
| 1350 | newinode->i_nlink); |
Steve French | cbac3cb | 2007-04-25 11:46:06 +0000 | [diff] [blame] | 1351 | #endif |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 1352 | } |
| 1353 | kfree(pInfo); |
| 1354 | goto mkdir_out; |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1355 | } |
Steve French | c45d707 | 2007-09-17 02:04:21 +0000 | [diff] [blame] | 1356 | mkdir_retry_old: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1357 | /* BB add setting the equivalent of mode via CreateX w/ACLs */ |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 1358 | rc = CIFSSMBMkDir(xid, pTcon, full_path, cifs_sb->local_nls, |
| 1359 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1360 | if (rc) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1361 | cFYI(1, "cifs_mkdir returned 0x%x", rc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1362 | d_drop(direntry); |
| 1363 | } else { |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1364 | mkdir_get_info: |
Dave Hansen | d8c76e6 | 2006-09-30 23:29:04 -0700 | [diff] [blame] | 1365 | inc_nlink(inode); |
Steve French | c18c842 | 2007-07-18 23:21:09 +0000 | [diff] [blame] | 1366 | if (pTcon->unix_ext) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1367 | rc = cifs_get_inode_info_unix(&newinode, full_path, |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1368 | inode->i_sb, xid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1369 | else |
| 1370 | rc = cifs_get_inode_info(&newinode, full_path, NULL, |
Steve French | 8b1327f | 2008-03-14 22:37:16 +0000 | [diff] [blame] | 1371 | inode->i_sb, xid, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1372 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1373 | d_instantiate(direntry, newinode); |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 1374 | /* setting nlink not necessary except in cases where we |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1375 | * failed to get it from the server or was set bogus */ |
Steve French | 2dd29d3 | 2007-04-23 22:07:35 +0000 | [diff] [blame] | 1376 | if ((direntry->d_inode) && (direntry->d_inode->i_nlink < 2)) |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1377 | direntry->d_inode->i_nlink = 2; |
Jeff Layton | 9508991 | 2008-08-06 04:39:02 +0000 | [diff] [blame] | 1378 | |
Al Viro | ce3b0f8 | 2009-03-29 19:08:22 -0400 | [diff] [blame] | 1379 | mode &= ~current_umask(); |
Jeff Layton | 9508991 | 2008-08-06 04:39:02 +0000 | [diff] [blame] | 1380 | /* must turn on setgid bit if parent dir has it */ |
| 1381 | if (inode->i_mode & S_ISGID) |
| 1382 | mode |= S_ISGID; |
| 1383 | |
Steve French | c18c842 | 2007-07-18 23:21:09 +0000 | [diff] [blame] | 1384 | if (pTcon->unix_ext) { |
Jeff Layton | 4e1e7fb | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 1385 | struct cifs_unix_set_info_args args = { |
| 1386 | .mode = mode, |
| 1387 | .ctime = NO_CHANGE_64, |
| 1388 | .atime = NO_CHANGE_64, |
| 1389 | .mtime = NO_CHANGE_64, |
| 1390 | .device = 0, |
| 1391 | }; |
Steve French | d0d2f2d | 2005-06-02 15:12:36 -0700 | [diff] [blame] | 1392 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) { |
David Howells | a001e5b | 2008-11-14 10:38:47 +1100 | [diff] [blame] | 1393 | args.uid = (__u64)current_fsuid(); |
Jeff Layton | 9508991 | 2008-08-06 04:39:02 +0000 | [diff] [blame] | 1394 | if (inode->i_mode & S_ISGID) |
| 1395 | args.gid = (__u64)inode->i_gid; |
| 1396 | else |
David Howells | a001e5b | 2008-11-14 10:38:47 +1100 | [diff] [blame] | 1397 | args.gid = (__u64)current_fsgid(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1398 | } else { |
Jeff Layton | 4e1e7fb | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 1399 | args.uid = NO_CHANGE_64; |
| 1400 | args.gid = NO_CHANGE_64; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1401 | } |
Jeff Layton | 01ea95e | 2009-07-09 20:02:49 -0400 | [diff] [blame] | 1402 | CIFSSMBUnixSetPathInfo(xid, pTcon, full_path, &args, |
| 1403 | cifs_sb->local_nls, |
| 1404 | cifs_sb->mnt_cifs_flags & |
| 1405 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Steve French | 3ce53fc | 2007-06-08 14:55:14 +0000 | [diff] [blame] | 1406 | } else { |
Jeff Layton | 67750fb | 2008-05-09 22:28:02 +0000 | [diff] [blame] | 1407 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) && |
| 1408 | (mode & S_IWUGO) == 0) { |
| 1409 | FILE_BASIC_INFO pInfo; |
Jeff Layton | 6b37faa | 2008-10-06 21:54:41 +0000 | [diff] [blame] | 1410 | struct cifsInodeInfo *cifsInode; |
| 1411 | u32 dosattrs; |
| 1412 | |
Jeff Layton | 67750fb | 2008-05-09 22:28:02 +0000 | [diff] [blame] | 1413 | memset(&pInfo, 0, sizeof(pInfo)); |
Jeff Layton | 6b37faa | 2008-10-06 21:54:41 +0000 | [diff] [blame] | 1414 | cifsInode = CIFS_I(newinode); |
| 1415 | dosattrs = cifsInode->cifsAttrs|ATTR_READONLY; |
| 1416 | pInfo.Attributes = cpu_to_le32(dosattrs); |
| 1417 | tmprc = CIFSSMBSetPathInfo(xid, pTcon, |
| 1418 | full_path, &pInfo, |
| 1419 | cifs_sb->local_nls, |
Jeff Layton | 67750fb | 2008-05-09 22:28:02 +0000 | [diff] [blame] | 1420 | cifs_sb->mnt_cifs_flags & |
| 1421 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Jeff Layton | 6b37faa | 2008-10-06 21:54:41 +0000 | [diff] [blame] | 1422 | if (tmprc == 0) |
| 1423 | cifsInode->cifsAttrs = dosattrs; |
Jeff Layton | 67750fb | 2008-05-09 22:28:02 +0000 | [diff] [blame] | 1424 | } |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1425 | if (direntry->d_inode) { |
Jeff Layton | b0fd30d | 2008-05-22 09:33:34 -0400 | [diff] [blame] | 1426 | if (cifs_sb->mnt_cifs_flags & |
| 1427 | CIFS_MOUNT_DYNPERM) |
| 1428 | direntry->d_inode->i_mode = |
| 1429 | (mode | S_IFDIR); |
Steve French | 4e94a10 | 2008-05-23 18:22:46 +0000 | [diff] [blame] | 1430 | |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1431 | if (cifs_sb->mnt_cifs_flags & |
Steve French | 6473a55 | 2005-11-29 20:20:10 -0800 | [diff] [blame] | 1432 | CIFS_MOUNT_SET_UID) { |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1433 | direntry->d_inode->i_uid = |
David Howells | a001e5b | 2008-11-14 10:38:47 +1100 | [diff] [blame] | 1434 | current_fsuid(); |
Jeff Layton | 9508991 | 2008-08-06 04:39:02 +0000 | [diff] [blame] | 1435 | if (inode->i_mode & S_ISGID) |
| 1436 | direntry->d_inode->i_gid = |
| 1437 | inode->i_gid; |
| 1438 | else |
| 1439 | direntry->d_inode->i_gid = |
David Howells | a001e5b | 2008-11-14 10:38:47 +1100 | [diff] [blame] | 1440 | current_fsgid(); |
Steve French | 6473a55 | 2005-11-29 20:20:10 -0800 | [diff] [blame] | 1441 | } |
| 1442 | } |
Steve French | 2a138ebb | 2005-11-29 21:22:19 -0800 | [diff] [blame] | 1443 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1444 | } |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1445 | mkdir_out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1446 | kfree(full_path); |
| 1447 | FreeXid(xid); |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1448 | cifs_put_tlink(tlink); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1449 | return rc; |
| 1450 | } |
| 1451 | |
| 1452 | int cifs_rmdir(struct inode *inode, struct dentry *direntry) |
| 1453 | { |
| 1454 | int rc = 0; |
| 1455 | int xid; |
| 1456 | struct cifs_sb_info *cifs_sb; |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1457 | struct tcon_link *tlink; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1458 | struct cifsTconInfo *pTcon; |
| 1459 | char *full_path = NULL; |
| 1460 | struct cifsInodeInfo *cifsInode; |
| 1461 | |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1462 | cFYI(1, "cifs_rmdir, inode = 0x%p", inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1463 | |
| 1464 | xid = GetXid(); |
| 1465 | |
Steve French | 7f57356 | 2005-08-30 11:32:14 -0700 | [diff] [blame] | 1466 | full_path = build_path_from_dentry(direntry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1467 | if (full_path == NULL) { |
Suresh Jayaraman | 0f3bc09 | 2009-06-25 18:12:34 +0530 | [diff] [blame] | 1468 | rc = -ENOMEM; |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1469 | goto rmdir_exit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1470 | } |
| 1471 | |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1472 | cifs_sb = CIFS_SB(inode->i_sb); |
| 1473 | tlink = cifs_sb_tlink(cifs_sb); |
| 1474 | if (IS_ERR(tlink)) { |
| 1475 | rc = PTR_ERR(tlink); |
| 1476 | goto rmdir_exit; |
| 1477 | } |
| 1478 | pTcon = tlink_tcon(tlink); |
| 1479 | |
Steve French | 737b758 | 2005-04-28 22:41:06 -0700 | [diff] [blame] | 1480 | rc = CIFSSMBRmDir(xid, pTcon, full_path, cifs_sb->local_nls, |
| 1481 | cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1482 | cifs_put_tlink(tlink); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1483 | |
| 1484 | if (!rc) { |
Dave Hansen | 9a53c3a | 2006-09-30 23:29:03 -0700 | [diff] [blame] | 1485 | drop_nlink(inode); |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 1486 | spin_lock(&direntry->d_inode->i_lock); |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 1487 | i_size_write(direntry->d_inode, 0); |
Dave Hansen | ce71ec3 | 2006-09-30 23:29:06 -0700 | [diff] [blame] | 1488 | clear_nlink(direntry->d_inode); |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 1489 | spin_unlock(&direntry->d_inode->i_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1490 | } |
| 1491 | |
| 1492 | cifsInode = CIFS_I(direntry->d_inode); |
| 1493 | cifsInode->time = 0; /* force revalidate to go get info when |
| 1494 | needed */ |
Steve French | 42c2454 | 2009-01-13 22:03:55 +0000 | [diff] [blame] | 1495 | |
| 1496 | cifsInode = CIFS_I(inode); |
| 1497 | cifsInode->time = 0; /* force revalidate to get parent dir info |
| 1498 | since cached search results now invalid */ |
| 1499 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1500 | direntry->d_inode->i_ctime = inode->i_ctime = inode->i_mtime = |
| 1501 | current_fs_time(inode->i_sb); |
| 1502 | |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1503 | rmdir_exit: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1504 | kfree(full_path); |
| 1505 | FreeXid(xid); |
| 1506 | return rc; |
| 1507 | } |
| 1508 | |
Steve French | ee2fd96 | 2008-09-23 18:23:33 +0000 | [diff] [blame] | 1509 | static int |
| 1510 | cifs_do_rename(int xid, struct dentry *from_dentry, const char *fromPath, |
| 1511 | struct dentry *to_dentry, const char *toPath) |
| 1512 | { |
| 1513 | struct cifs_sb_info *cifs_sb = CIFS_SB(from_dentry->d_sb); |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1514 | struct tcon_link *tlink; |
| 1515 | struct cifsTconInfo *pTcon; |
Steve French | ee2fd96 | 2008-09-23 18:23:33 +0000 | [diff] [blame] | 1516 | __u16 srcfid; |
| 1517 | int oplock, rc; |
| 1518 | |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1519 | tlink = cifs_sb_tlink(cifs_sb); |
| 1520 | if (IS_ERR(tlink)) |
| 1521 | return PTR_ERR(tlink); |
| 1522 | pTcon = tlink_tcon(tlink); |
| 1523 | |
Steve French | ee2fd96 | 2008-09-23 18:23:33 +0000 | [diff] [blame] | 1524 | /* try path-based rename first */ |
| 1525 | rc = CIFSSMBRename(xid, pTcon, fromPath, toPath, cifs_sb->local_nls, |
| 1526 | cifs_sb->mnt_cifs_flags & |
| 1527 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
| 1528 | |
| 1529 | /* |
| 1530 | * don't bother with rename by filehandle unless file is busy and |
| 1531 | * source Note that cross directory moves do not work with |
| 1532 | * rename by filehandle to various Windows servers. |
| 1533 | */ |
| 1534 | if (rc == 0 || rc != -ETXTBSY) |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1535 | goto do_rename_exit; |
Steve French | ee2fd96 | 2008-09-23 18:23:33 +0000 | [diff] [blame] | 1536 | |
Jeff Layton | ed0e3ac | 2010-06-01 16:21:01 -0400 | [diff] [blame] | 1537 | /* open-file renames don't work across directories */ |
| 1538 | if (to_dentry->d_parent != from_dentry->d_parent) |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1539 | goto do_rename_exit; |
Jeff Layton | ed0e3ac | 2010-06-01 16:21:01 -0400 | [diff] [blame] | 1540 | |
Steve French | ee2fd96 | 2008-09-23 18:23:33 +0000 | [diff] [blame] | 1541 | /* open the file to be renamed -- we need DELETE perms */ |
| 1542 | rc = CIFSSMBOpen(xid, pTcon, fromPath, FILE_OPEN, DELETE, |
| 1543 | CREATE_NOT_DIR, &srcfid, &oplock, NULL, |
| 1544 | cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & |
| 1545 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
| 1546 | |
| 1547 | if (rc == 0) { |
| 1548 | rc = CIFSSMBRenameOpenFile(xid, pTcon, srcfid, |
| 1549 | (const char *) to_dentry->d_name.name, |
| 1550 | cifs_sb->local_nls, cifs_sb->mnt_cifs_flags & |
| 1551 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
| 1552 | |
| 1553 | CIFSSMBClose(xid, pTcon, srcfid); |
| 1554 | } |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1555 | do_rename_exit: |
| 1556 | cifs_put_tlink(tlink); |
Steve French | ee2fd96 | 2008-09-23 18:23:33 +0000 | [diff] [blame] | 1557 | return rc; |
| 1558 | } |
| 1559 | |
Jeff Layton | 14121bd | 2008-10-20 14:45:22 -0400 | [diff] [blame] | 1560 | int cifs_rename(struct inode *source_dir, struct dentry *source_dentry, |
| 1561 | struct inode *target_dir, struct dentry *target_dentry) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1562 | { |
Steve French | ee2fd96 | 2008-09-23 18:23:33 +0000 | [diff] [blame] | 1563 | char *fromName = NULL; |
| 1564 | char *toName = NULL; |
Jeff Layton | 639e7a9 | 2010-09-03 11:50:09 -0400 | [diff] [blame] | 1565 | struct cifs_sb_info *cifs_sb; |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1566 | struct tcon_link *tlink; |
Jeff Layton | 14121bd | 2008-10-20 14:45:22 -0400 | [diff] [blame] | 1567 | struct cifsTconInfo *tcon; |
Steve French | ee2fd96 | 2008-09-23 18:23:33 +0000 | [diff] [blame] | 1568 | FILE_UNIX_BASIC_INFO *info_buf_source = NULL; |
| 1569 | FILE_UNIX_BASIC_INFO *info_buf_target; |
Jeff Layton | 8d281ef | 2008-10-22 13:57:01 -0400 | [diff] [blame] | 1570 | int xid, rc, tmprc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1571 | |
Jeff Layton | 639e7a9 | 2010-09-03 11:50:09 -0400 | [diff] [blame] | 1572 | cifs_sb = CIFS_SB(source_dir->i_sb); |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1573 | tlink = cifs_sb_tlink(cifs_sb); |
| 1574 | if (IS_ERR(tlink)) |
| 1575 | return PTR_ERR(tlink); |
| 1576 | tcon = tlink_tcon(tlink); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1577 | |
Steve French | ee2fd96 | 2008-09-23 18:23:33 +0000 | [diff] [blame] | 1578 | xid = GetXid(); |
| 1579 | |
| 1580 | /* |
Steve French | ee2fd96 | 2008-09-23 18:23:33 +0000 | [diff] [blame] | 1581 | * we already have the rename sem so we do not need to |
| 1582 | * grab it again here to protect the path integrity |
| 1583 | */ |
Jeff Layton | 14121bd | 2008-10-20 14:45:22 -0400 | [diff] [blame] | 1584 | fromName = build_path_from_dentry(source_dentry); |
Steve French | ee2fd96 | 2008-09-23 18:23:33 +0000 | [diff] [blame] | 1585 | if (fromName == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1586 | rc = -ENOMEM; |
| 1587 | goto cifs_rename_exit; |
| 1588 | } |
| 1589 | |
Jeff Layton | 14121bd | 2008-10-20 14:45:22 -0400 | [diff] [blame] | 1590 | toName = build_path_from_dentry(target_dentry); |
Steve French | ee2fd96 | 2008-09-23 18:23:33 +0000 | [diff] [blame] | 1591 | if (toName == NULL) { |
| 1592 | rc = -ENOMEM; |
| 1593 | goto cifs_rename_exit; |
| 1594 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1595 | |
Jeff Layton | 14121bd | 2008-10-20 14:45:22 -0400 | [diff] [blame] | 1596 | rc = cifs_do_rename(xid, source_dentry, fromName, |
| 1597 | target_dentry, toName); |
Steve French | ee2fd96 | 2008-09-23 18:23:33 +0000 | [diff] [blame] | 1598 | |
Jeff Layton | 14121bd | 2008-10-20 14:45:22 -0400 | [diff] [blame] | 1599 | if (rc == -EEXIST && tcon->unix_ext) { |
Steve French | ee2fd96 | 2008-09-23 18:23:33 +0000 | [diff] [blame] | 1600 | /* |
Jeff Layton | 14121bd | 2008-10-20 14:45:22 -0400 | [diff] [blame] | 1601 | * Are src and dst hardlinks of same inode? We can |
| 1602 | * only tell with unix extensions enabled |
Steve French | ee2fd96 | 2008-09-23 18:23:33 +0000 | [diff] [blame] | 1603 | */ |
Jeff Layton | 14121bd | 2008-10-20 14:45:22 -0400 | [diff] [blame] | 1604 | info_buf_source = |
| 1605 | kmalloc(2 * sizeof(FILE_UNIX_BASIC_INFO), |
| 1606 | GFP_KERNEL); |
| 1607 | if (info_buf_source == NULL) { |
| 1608 | rc = -ENOMEM; |
| 1609 | goto cifs_rename_exit; |
| 1610 | } |
| 1611 | |
| 1612 | info_buf_target = info_buf_source + 1; |
Jeff Layton | 8d281ef | 2008-10-22 13:57:01 -0400 | [diff] [blame] | 1613 | tmprc = CIFSSMBUnixQPathInfo(xid, tcon, fromName, |
Jeff Layton | 14121bd | 2008-10-20 14:45:22 -0400 | [diff] [blame] | 1614 | info_buf_source, |
Jeff Layton | 639e7a9 | 2010-09-03 11:50:09 -0400 | [diff] [blame] | 1615 | cifs_sb->local_nls, |
| 1616 | cifs_sb->mnt_cifs_flags & |
Jeff Layton | 14121bd | 2008-10-20 14:45:22 -0400 | [diff] [blame] | 1617 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Jeff Layton | 8d281ef | 2008-10-22 13:57:01 -0400 | [diff] [blame] | 1618 | if (tmprc != 0) |
Jeff Layton | 14121bd | 2008-10-20 14:45:22 -0400 | [diff] [blame] | 1619 | goto unlink_target; |
| 1620 | |
Jeff Layton | 639e7a9 | 2010-09-03 11:50:09 -0400 | [diff] [blame] | 1621 | tmprc = CIFSSMBUnixQPathInfo(xid, tcon, toName, |
| 1622 | info_buf_target, |
| 1623 | cifs_sb->local_nls, |
| 1624 | cifs_sb->mnt_cifs_flags & |
Jeff Layton | 14121bd | 2008-10-20 14:45:22 -0400 | [diff] [blame] | 1625 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
| 1626 | |
Jeff Layton | 8d281ef | 2008-10-22 13:57:01 -0400 | [diff] [blame] | 1627 | if (tmprc == 0 && (info_buf_source->UniqueId == |
Jeff Layton | ae6884a | 2008-11-03 14:05:08 -0500 | [diff] [blame] | 1628 | info_buf_target->UniqueId)) { |
Jeff Layton | 14121bd | 2008-10-20 14:45:22 -0400 | [diff] [blame] | 1629 | /* same file, POSIX says that this is a noop */ |
Jeff Layton | ae6884a | 2008-11-03 14:05:08 -0500 | [diff] [blame] | 1630 | rc = 0; |
Jeff Layton | 14121bd | 2008-10-20 14:45:22 -0400 | [diff] [blame] | 1631 | goto cifs_rename_exit; |
Jeff Layton | ae6884a | 2008-11-03 14:05:08 -0500 | [diff] [blame] | 1632 | } |
Jeff Layton | 14121bd | 2008-10-20 14:45:22 -0400 | [diff] [blame] | 1633 | } /* else ... BB we could add the same check for Windows by |
| 1634 | checking the UniqueId via FILE_INTERNAL_INFO */ |
| 1635 | |
Jeff Layton | 14121bd | 2008-10-20 14:45:22 -0400 | [diff] [blame] | 1636 | unlink_target: |
Jeff Layton | fc6f394 | 2009-04-17 11:45:30 -0400 | [diff] [blame] | 1637 | /* Try unlinking the target dentry if it's not negative */ |
| 1638 | if (target_dentry->d_inode && (rc == -EACCES || rc == -EEXIST)) { |
Jeff Layton | 8d281ef | 2008-10-22 13:57:01 -0400 | [diff] [blame] | 1639 | tmprc = cifs_unlink(target_dir, target_dentry); |
Jeff Layton | 14121bd | 2008-10-20 14:45:22 -0400 | [diff] [blame] | 1640 | if (tmprc) |
| 1641 | goto cifs_rename_exit; |
| 1642 | |
Jeff Layton | 14121bd | 2008-10-20 14:45:22 -0400 | [diff] [blame] | 1643 | rc = cifs_do_rename(xid, source_dentry, fromName, |
| 1644 | target_dentry, toName); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1645 | } |
| 1646 | |
| 1647 | cifs_rename_exit: |
Steve French | ee2fd96 | 2008-09-23 18:23:33 +0000 | [diff] [blame] | 1648 | kfree(info_buf_source); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1649 | kfree(fromName); |
| 1650 | kfree(toName); |
| 1651 | FreeXid(xid); |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1652 | cifs_put_tlink(tlink); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1653 | return rc; |
| 1654 | } |
| 1655 | |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 1656 | static bool |
| 1657 | cifs_inode_needs_reval(struct inode *inode) |
| 1658 | { |
| 1659 | struct cifsInodeInfo *cifs_i = CIFS_I(inode); |
Suresh Jayaraman | 6d20e84 | 2010-12-01 14:42:28 +0530 | [diff] [blame] | 1660 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 1661 | |
| 1662 | if (cifs_i->clientCanCacheRead) |
| 1663 | return false; |
| 1664 | |
| 1665 | if (!lookupCacheEnabled) |
| 1666 | return true; |
| 1667 | |
| 1668 | if (cifs_i->time == 0) |
| 1669 | return true; |
| 1670 | |
Suresh Jayaraman | 6d20e84 | 2010-12-01 14:42:28 +0530 | [diff] [blame] | 1671 | if (!time_in_range(jiffies, cifs_i->time, |
| 1672 | cifs_i->time + cifs_sb->actimeo)) |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 1673 | return true; |
| 1674 | |
Jeff Layton | db19272 | 2010-05-17 14:51:49 -0400 | [diff] [blame] | 1675 | /* hardlinked files w/ noserverino get "special" treatment */ |
Suresh Jayaraman | 6d20e84 | 2010-12-01 14:42:28 +0530 | [diff] [blame] | 1676 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) && |
Jeff Layton | db19272 | 2010-05-17 14:51:49 -0400 | [diff] [blame] | 1677 | S_ISREG(inode->i_mode) && inode->i_nlink != 1) |
| 1678 | return true; |
| 1679 | |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 1680 | return false; |
| 1681 | } |
| 1682 | |
Suresh Jayaraman | 523fb8c | 2010-11-29 22:39:47 +0530 | [diff] [blame] | 1683 | /* |
| 1684 | * Zap the cache. Called when invalid_mapping flag is set. |
| 1685 | */ |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 1686 | int |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 1687 | cifs_invalidate_mapping(struct inode *inode) |
| 1688 | { |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 1689 | int rc = 0; |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 1690 | struct cifsInodeInfo *cifs_i = CIFS_I(inode); |
| 1691 | |
| 1692 | cifs_i->invalid_mapping = false; |
| 1693 | |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 1694 | if (inode->i_mapping && inode->i_mapping->nrpages != 0) { |
Pavel Shilovsky | 257fb1f | 2011-03-16 01:55:32 +0300 | [diff] [blame] | 1695 | rc = invalidate_inode_pages2(inode->i_mapping); |
| 1696 | if (rc) { |
| 1697 | cERROR(1, "%s: could not invalidate inode %p", __func__, |
| 1698 | inode); |
| 1699 | cifs_i->invalid_mapping = true; |
| 1700 | } |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 1701 | } |
Pavel Shilovsky | 257fb1f | 2011-03-16 01:55:32 +0300 | [diff] [blame] | 1702 | |
Suresh Jayaraman | 9451a9a | 2010-07-05 18:12:45 +0530 | [diff] [blame] | 1703 | cifs_fscache_reset_inode_cookie(inode); |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 1704 | return rc; |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 1705 | } |
| 1706 | |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 1707 | int cifs_revalidate_file_attr(struct file *filp) |
Jeff Layton | abab095 | 2010-02-12 07:44:18 -0500 | [diff] [blame] | 1708 | { |
| 1709 | int rc = 0; |
| 1710 | struct inode *inode = filp->f_path.dentry->d_inode; |
Jeff Layton | ba00ba6 | 2010-09-20 16:01:31 -0700 | [diff] [blame] | 1711 | struct cifsFileInfo *cfile = (struct cifsFileInfo *) filp->private_data; |
Jeff Layton | abab095 | 2010-02-12 07:44:18 -0500 | [diff] [blame] | 1712 | |
| 1713 | if (!cifs_inode_needs_reval(inode)) |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 1714 | return rc; |
Jeff Layton | abab095 | 2010-02-12 07:44:18 -0500 | [diff] [blame] | 1715 | |
Jeff Layton | 13cfb73 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1716 | if (tlink_tcon(cfile->tlink)->unix_ext) |
Jeff Layton | abab095 | 2010-02-12 07:44:18 -0500 | [diff] [blame] | 1717 | rc = cifs_get_file_info_unix(filp); |
| 1718 | else |
| 1719 | rc = cifs_get_file_info(filp); |
| 1720 | |
Jeff Layton | abab095 | 2010-02-12 07:44:18 -0500 | [diff] [blame] | 1721 | return rc; |
| 1722 | } |
| 1723 | |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 1724 | int cifs_revalidate_dentry_attr(struct dentry *dentry) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1725 | { |
| 1726 | int xid; |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 1727 | int rc = 0; |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 1728 | struct inode *inode = dentry->d_inode; |
| 1729 | struct super_block *sb = dentry->d_sb; |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 1730 | char *full_path = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1731 | |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 1732 | if (inode == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1733 | return -ENOENT; |
| 1734 | |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 1735 | if (!cifs_inode_needs_reval(inode)) |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 1736 | return rc; |
| 1737 | |
| 1738 | xid = GetXid(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1739 | |
| 1740 | /* can not safely grab the rename sem here if rename calls revalidate |
| 1741 | since that would deadlock */ |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 1742 | full_path = build_path_from_dentry(dentry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1743 | if (full_path == NULL) { |
Suresh Jayaraman | 0f3bc09 | 2009-06-25 18:12:34 +0530 | [diff] [blame] | 1744 | rc = -ENOMEM; |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 1745 | goto out; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1746 | } |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 1747 | |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 1748 | cFYI(1, "Update attributes: %s inode 0x%p count %d dentry: 0x%p d_time " |
| 1749 | "%ld jiffies %ld", full_path, inode, inode->i_count.counter, |
Steve French | f19159d | 2010-04-21 04:12:10 +0000 | [diff] [blame] | 1750 | dentry, dentry->d_time, jiffies); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1751 | |
Jeff Layton | 0d424ad | 2010-09-20 16:01:35 -0700 | [diff] [blame] | 1752 | if (cifs_sb_master_tcon(CIFS_SB(sb))->unix_ext) |
Jeff Layton | df2cf17 | 2010-02-12 07:44:16 -0500 | [diff] [blame] | 1753 | rc = cifs_get_inode_info_unix(&inode, full_path, sb, xid); |
| 1754 | else |
| 1755 | rc = cifs_get_inode_info(&inode, full_path, NULL, sb, |
| 1756 | xid, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1757 | |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 1758 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1759 | kfree(full_path); |
| 1760 | FreeXid(xid); |
| 1761 | return rc; |
| 1762 | } |
| 1763 | |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 1764 | int cifs_revalidate_file(struct file *filp) |
| 1765 | { |
| 1766 | int rc; |
| 1767 | struct inode *inode = filp->f_path.dentry->d_inode; |
| 1768 | |
| 1769 | rc = cifs_revalidate_file_attr(filp); |
| 1770 | if (rc) |
| 1771 | return rc; |
| 1772 | |
| 1773 | if (CIFS_I(inode)->invalid_mapping) |
| 1774 | rc = cifs_invalidate_mapping(inode); |
| 1775 | return rc; |
| 1776 | } |
| 1777 | |
| 1778 | /* revalidate a dentry's inode attributes */ |
| 1779 | int cifs_revalidate_dentry(struct dentry *dentry) |
| 1780 | { |
| 1781 | int rc; |
| 1782 | struct inode *inode = dentry->d_inode; |
| 1783 | |
| 1784 | rc = cifs_revalidate_dentry_attr(dentry); |
| 1785 | if (rc) |
| 1786 | return rc; |
| 1787 | |
| 1788 | if (CIFS_I(inode)->invalid_mapping) |
| 1789 | rc = cifs_invalidate_mapping(inode); |
| 1790 | return rc; |
| 1791 | } |
| 1792 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1793 | int cifs_getattr(struct vfsmount *mnt, struct dentry *dentry, |
Jeff Layton | 1c45601 | 2010-10-12 11:32:42 -0400 | [diff] [blame] | 1794 | struct kstat *stat) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1795 | { |
Jeff Layton | 3aa1c8c | 2010-10-07 14:46:28 -0400 | [diff] [blame] | 1796 | struct cifs_sb_info *cifs_sb = CIFS_SB(dentry->d_sb); |
| 1797 | struct cifsTconInfo *tcon = cifs_sb_master_tcon(cifs_sb); |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 1798 | struct inode *inode = dentry->d_inode; |
| 1799 | int rc; |
Jeff Layton | 3aa1c8c | 2010-10-07 14:46:28 -0400 | [diff] [blame] | 1800 | |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 1801 | /* |
| 1802 | * We need to be sure that all dirty pages are written and the server |
| 1803 | * has actual ctime, mtime and file length. |
| 1804 | */ |
| 1805 | if (!CIFS_I(inode)->clientCanCacheRead && inode->i_mapping && |
| 1806 | inode->i_mapping->nrpages != 0) { |
| 1807 | rc = filemap_fdatawait(inode->i_mapping); |
Steve French | 156ecb2 | 2011-05-20 17:00:01 +0000 | [diff] [blame] | 1808 | if (rc) { |
| 1809 | mapping_set_error(inode->i_mapping, rc); |
| 1810 | return rc; |
| 1811 | } |
Steve French | 5fe14c8 | 2006-11-07 19:26:33 +0000 | [diff] [blame] | 1812 | } |
Pavel Shilovsky | 6feb989 | 2011-04-07 18:18:11 +0400 | [diff] [blame] | 1813 | |
| 1814 | rc = cifs_revalidate_dentry_attr(dentry); |
| 1815 | if (rc) |
| 1816 | return rc; |
| 1817 | |
| 1818 | generic_fillattr(inode, stat); |
| 1819 | stat->blksize = CIFS_MAX_MSGSIZE; |
| 1820 | stat->ino = CIFS_I(inode)->uniqueid; |
| 1821 | |
| 1822 | /* |
| 1823 | * If on a multiuser mount without unix extensions, and the admin hasn't |
| 1824 | * overridden them, set the ownership to the fsuid/fsgid of the current |
| 1825 | * process. |
| 1826 | */ |
| 1827 | if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MULTIUSER) && |
| 1828 | !tcon->unix_ext) { |
| 1829 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID)) |
| 1830 | stat->uid = current_fsuid(); |
| 1831 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID)) |
| 1832 | stat->gid = current_fsgid(); |
| 1833 | } |
| 1834 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1835 | } |
| 1836 | |
| 1837 | static int cifs_truncate_page(struct address_space *mapping, loff_t from) |
| 1838 | { |
| 1839 | pgoff_t index = from >> PAGE_CACHE_SHIFT; |
| 1840 | unsigned offset = from & (PAGE_CACHE_SIZE - 1); |
| 1841 | struct page *page; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1842 | int rc = 0; |
| 1843 | |
| 1844 | page = grab_cache_page(mapping, index); |
| 1845 | if (!page) |
| 1846 | return -ENOMEM; |
| 1847 | |
Christoph Lameter | eebd2aa | 2008-02-04 22:28:29 -0800 | [diff] [blame] | 1848 | zero_user_segment(page, offset, PAGE_CACHE_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1849 | unlock_page(page); |
| 1850 | page_cache_release(page); |
| 1851 | return rc; |
| 1852 | } |
| 1853 | |
Christoph Hellwig | 1b94746 | 2010-07-18 17:51:21 -0400 | [diff] [blame] | 1854 | static void cifs_setsize(struct inode *inode, loff_t offset) |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 1855 | { |
npiggin@suse.de | c08d3b0 | 2009-08-21 02:35:06 +1000 | [diff] [blame] | 1856 | loff_t oldsize; |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 1857 | |
Steve French | ba6a46a | 2007-02-26 20:06:29 +0000 | [diff] [blame] | 1858 | spin_lock(&inode->i_lock); |
npiggin@suse.de | c08d3b0 | 2009-08-21 02:35:06 +1000 | [diff] [blame] | 1859 | oldsize = inode->i_size; |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 1860 | i_size_write(inode, offset); |
Steve French | ba6a46a | 2007-02-26 20:06:29 +0000 | [diff] [blame] | 1861 | spin_unlock(&inode->i_lock); |
Christoph Hellwig | 1b94746 | 2010-07-18 17:51:21 -0400 | [diff] [blame] | 1862 | |
npiggin@suse.de | c08d3b0 | 2009-08-21 02:35:06 +1000 | [diff] [blame] | 1863 | truncate_pagecache(inode, oldsize, offset); |
Steve French | 3677db1 | 2007-02-26 16:46:11 +0000 | [diff] [blame] | 1864 | } |
| 1865 | |
Jeff Layton | 8efdbde | 2008-07-23 21:28:12 +0000 | [diff] [blame] | 1866 | static int |
| 1867 | cifs_set_file_size(struct inode *inode, struct iattr *attrs, |
| 1868 | int xid, char *full_path) |
| 1869 | { |
| 1870 | int rc; |
| 1871 | struct cifsFileInfo *open_file; |
| 1872 | struct cifsInodeInfo *cifsInode = CIFS_I(inode); |
| 1873 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1874 | struct tcon_link *tlink = NULL; |
Jeff Layton | ba00ba6 | 2010-09-20 16:01:31 -0700 | [diff] [blame] | 1875 | struct cifsTconInfo *pTcon = NULL; |
Jeff Layton | 8efdbde | 2008-07-23 21:28:12 +0000 | [diff] [blame] | 1876 | |
| 1877 | /* |
| 1878 | * To avoid spurious oplock breaks from server, in the case of |
| 1879 | * inodes that we already have open, avoid doing path based |
| 1880 | * setting of file size if we can do it by handle. |
| 1881 | * This keeps our caching token (oplock) and avoids timeouts |
| 1882 | * when the local oplock break takes longer to flush |
| 1883 | * writebehind data than the SMB timeout for the SetPathInfo |
| 1884 | * request would allow |
| 1885 | */ |
Jeff Layton | 6508d90 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1886 | open_file = find_writable_file(cifsInode, true); |
Jeff Layton | 8efdbde | 2008-07-23 21:28:12 +0000 | [diff] [blame] | 1887 | if (open_file) { |
| 1888 | __u16 nfid = open_file->netfid; |
| 1889 | __u32 npid = open_file->pid; |
Jeff Layton | 13cfb73 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1890 | pTcon = tlink_tcon(open_file->tlink); |
Jeff Layton | 8efdbde | 2008-07-23 21:28:12 +0000 | [diff] [blame] | 1891 | rc = CIFSSMBSetFileSize(xid, pTcon, attrs->ia_size, nfid, |
| 1892 | npid, false); |
Dave Kleikamp | 6ab409b | 2009-08-31 11:07:12 -0400 | [diff] [blame] | 1893 | cifsFileInfo_put(open_file); |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1894 | cFYI(1, "SetFSize for attrs rc = %d", rc); |
Jeff Layton | 8efdbde | 2008-07-23 21:28:12 +0000 | [diff] [blame] | 1895 | if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) { |
| 1896 | unsigned int bytes_written; |
| 1897 | rc = CIFSSMBWrite(xid, pTcon, nfid, 0, attrs->ia_size, |
| 1898 | &bytes_written, NULL, NULL, 1); |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1899 | cFYI(1, "Wrt seteof rc %d", rc); |
Jeff Layton | 8efdbde | 2008-07-23 21:28:12 +0000 | [diff] [blame] | 1900 | } |
| 1901 | } else |
| 1902 | rc = -EINVAL; |
| 1903 | |
| 1904 | if (rc != 0) { |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1905 | if (pTcon == NULL) { |
| 1906 | tlink = cifs_sb_tlink(cifs_sb); |
| 1907 | if (IS_ERR(tlink)) |
| 1908 | return PTR_ERR(tlink); |
| 1909 | pTcon = tlink_tcon(tlink); |
| 1910 | } |
Jeff Layton | ba00ba6 | 2010-09-20 16:01:31 -0700 | [diff] [blame] | 1911 | |
Jeff Layton | 8efdbde | 2008-07-23 21:28:12 +0000 | [diff] [blame] | 1912 | /* Set file size by pathname rather than by handle |
| 1913 | either because no valid, writeable file handle for |
| 1914 | it was found or because there was an error setting |
| 1915 | it by handle */ |
| 1916 | rc = CIFSSMBSetEOF(xid, pTcon, full_path, attrs->ia_size, |
| 1917 | false, cifs_sb->local_nls, |
| 1918 | cifs_sb->mnt_cifs_flags & |
| 1919 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1920 | cFYI(1, "SetEOF by path (setattrs) rc = %d", rc); |
Jeff Layton | 8efdbde | 2008-07-23 21:28:12 +0000 | [diff] [blame] | 1921 | if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) { |
| 1922 | __u16 netfid; |
| 1923 | int oplock = 0; |
| 1924 | |
| 1925 | rc = SMBLegacyOpen(xid, pTcon, full_path, |
| 1926 | FILE_OPEN, GENERIC_WRITE, |
| 1927 | CREATE_NOT_DIR, &netfid, &oplock, NULL, |
| 1928 | cifs_sb->local_nls, |
| 1929 | cifs_sb->mnt_cifs_flags & |
| 1930 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
| 1931 | if (rc == 0) { |
| 1932 | unsigned int bytes_written; |
| 1933 | rc = CIFSSMBWrite(xid, pTcon, netfid, 0, |
| 1934 | attrs->ia_size, |
| 1935 | &bytes_written, NULL, |
| 1936 | NULL, 1); |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1937 | cFYI(1, "wrt seteof rc %d", rc); |
Jeff Layton | 8efdbde | 2008-07-23 21:28:12 +0000 | [diff] [blame] | 1938 | CIFSSMBClose(xid, pTcon, netfid); |
| 1939 | } |
| 1940 | } |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1941 | if (tlink) |
| 1942 | cifs_put_tlink(tlink); |
Jeff Layton | 8efdbde | 2008-07-23 21:28:12 +0000 | [diff] [blame] | 1943 | } |
| 1944 | |
| 1945 | if (rc == 0) { |
Jeff Layton | fbec9ab | 2009-04-03 13:44:00 -0400 | [diff] [blame] | 1946 | cifsInode->server_eof = attrs->ia_size; |
Christoph Hellwig | 1b94746 | 2010-07-18 17:51:21 -0400 | [diff] [blame] | 1947 | cifs_setsize(inode, attrs->ia_size); |
Jeff Layton | 8efdbde | 2008-07-23 21:28:12 +0000 | [diff] [blame] | 1948 | cifs_truncate_page(inode->i_mapping, inode->i_size); |
| 1949 | } |
| 1950 | |
| 1951 | return rc; |
| 1952 | } |
| 1953 | |
Jeff Layton | 3fe5c1d | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 1954 | static int |
| 1955 | cifs_setattr_unix(struct dentry *direntry, struct iattr *attrs) |
| 1956 | { |
| 1957 | int rc; |
| 1958 | int xid; |
| 1959 | char *full_path = NULL; |
| 1960 | struct inode *inode = direntry->d_inode; |
| 1961 | struct cifsInodeInfo *cifsInode = CIFS_I(inode); |
| 1962 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 1963 | struct tcon_link *tlink; |
Jeff Layton | ba00ba6 | 2010-09-20 16:01:31 -0700 | [diff] [blame] | 1964 | struct cifsTconInfo *pTcon; |
Jeff Layton | 3fe5c1d | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 1965 | struct cifs_unix_set_info_args *args = NULL; |
Jeff Layton | 3bbeeb3 | 2009-07-09 20:02:50 -0400 | [diff] [blame] | 1966 | struct cifsFileInfo *open_file; |
Jeff Layton | 3fe5c1d | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 1967 | |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 1968 | cFYI(1, "setattr_unix on file %s attrs->ia_valid=0x%x", |
| 1969 | direntry->d_name.name, attrs->ia_valid); |
Jeff Layton | 3fe5c1d | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 1970 | |
| 1971 | xid = GetXid(); |
| 1972 | |
Christoph Hellwig | db78b87 | 2010-06-04 11:30:03 +0200 | [diff] [blame] | 1973 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) |
| 1974 | attrs->ia_valid |= ATTR_FORCE; |
| 1975 | |
| 1976 | rc = inode_change_ok(inode, attrs); |
| 1977 | if (rc < 0) |
| 1978 | goto out; |
Jeff Layton | 3fe5c1d | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 1979 | |
| 1980 | full_path = build_path_from_dentry(direntry); |
| 1981 | if (full_path == NULL) { |
| 1982 | rc = -ENOMEM; |
| 1983 | goto out; |
| 1984 | } |
| 1985 | |
Jeff Layton | 0f4d634 | 2009-03-26 13:35:37 -0400 | [diff] [blame] | 1986 | /* |
| 1987 | * Attempt to flush data before changing attributes. We need to do |
| 1988 | * this for ATTR_SIZE and ATTR_MTIME for sure, and if we change the |
| 1989 | * ownership or mode then we may also need to do this. Here, we take |
| 1990 | * the safe way out and just do the flush on all setattr requests. If |
| 1991 | * the flush returns error, store it to report later and continue. |
| 1992 | * |
| 1993 | * BB: This should be smarter. Why bother flushing pages that |
| 1994 | * will be truncated anyway? Also, should we error out here if |
| 1995 | * the flush returns error? |
| 1996 | */ |
| 1997 | rc = filemap_write_and_wait(inode->i_mapping); |
Jeff Layton | eb4b756 | 2010-10-22 14:52:29 -0400 | [diff] [blame] | 1998 | mapping_set_error(inode->i_mapping, rc); |
| 1999 | rc = 0; |
Jeff Layton | 3fe5c1d | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2000 | |
| 2001 | if (attrs->ia_valid & ATTR_SIZE) { |
| 2002 | rc = cifs_set_file_size(inode, attrs, xid, full_path); |
| 2003 | if (rc != 0) |
| 2004 | goto out; |
| 2005 | } |
| 2006 | |
| 2007 | /* skip mode change if it's just for clearing setuid/setgid */ |
| 2008 | if (attrs->ia_valid & (ATTR_KILL_SUID|ATTR_KILL_SGID)) |
| 2009 | attrs->ia_valid &= ~ATTR_MODE; |
| 2010 | |
| 2011 | args = kmalloc(sizeof(*args), GFP_KERNEL); |
| 2012 | if (args == NULL) { |
| 2013 | rc = -ENOMEM; |
| 2014 | goto out; |
| 2015 | } |
| 2016 | |
| 2017 | /* set up the struct */ |
| 2018 | if (attrs->ia_valid & ATTR_MODE) |
| 2019 | args->mode = attrs->ia_mode; |
| 2020 | else |
| 2021 | args->mode = NO_CHANGE_64; |
| 2022 | |
| 2023 | if (attrs->ia_valid & ATTR_UID) |
| 2024 | args->uid = attrs->ia_uid; |
| 2025 | else |
| 2026 | args->uid = NO_CHANGE_64; |
| 2027 | |
| 2028 | if (attrs->ia_valid & ATTR_GID) |
| 2029 | args->gid = attrs->ia_gid; |
| 2030 | else |
| 2031 | args->gid = NO_CHANGE_64; |
| 2032 | |
| 2033 | if (attrs->ia_valid & ATTR_ATIME) |
| 2034 | args->atime = cifs_UnixTimeToNT(attrs->ia_atime); |
| 2035 | else |
| 2036 | args->atime = NO_CHANGE_64; |
| 2037 | |
| 2038 | if (attrs->ia_valid & ATTR_MTIME) |
| 2039 | args->mtime = cifs_UnixTimeToNT(attrs->ia_mtime); |
| 2040 | else |
| 2041 | args->mtime = NO_CHANGE_64; |
| 2042 | |
| 2043 | if (attrs->ia_valid & ATTR_CTIME) |
| 2044 | args->ctime = cifs_UnixTimeToNT(attrs->ia_ctime); |
| 2045 | else |
| 2046 | args->ctime = NO_CHANGE_64; |
| 2047 | |
| 2048 | args->device = 0; |
Jeff Layton | 6508d90 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 2049 | open_file = find_writable_file(cifsInode, true); |
Jeff Layton | 3bbeeb3 | 2009-07-09 20:02:50 -0400 | [diff] [blame] | 2050 | if (open_file) { |
| 2051 | u16 nfid = open_file->netfid; |
| 2052 | u32 npid = open_file->pid; |
Jeff Layton | 13cfb73 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 2053 | pTcon = tlink_tcon(open_file->tlink); |
Jeff Layton | 3bbeeb3 | 2009-07-09 20:02:50 -0400 | [diff] [blame] | 2054 | rc = CIFSSMBUnixSetFileInfo(xid, pTcon, args, nfid, npid); |
Dave Kleikamp | 6ab409b | 2009-08-31 11:07:12 -0400 | [diff] [blame] | 2055 | cifsFileInfo_put(open_file); |
Jeff Layton | 3bbeeb3 | 2009-07-09 20:02:50 -0400 | [diff] [blame] | 2056 | } else { |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 2057 | tlink = cifs_sb_tlink(cifs_sb); |
| 2058 | if (IS_ERR(tlink)) { |
| 2059 | rc = PTR_ERR(tlink); |
| 2060 | goto out; |
| 2061 | } |
| 2062 | pTcon = tlink_tcon(tlink); |
Jeff Layton | 3bbeeb3 | 2009-07-09 20:02:50 -0400 | [diff] [blame] | 2063 | rc = CIFSSMBUnixSetPathInfo(xid, pTcon, full_path, args, |
Jeff Layton | 01ea95e | 2009-07-09 20:02:49 -0400 | [diff] [blame] | 2064 | cifs_sb->local_nls, |
| 2065 | cifs_sb->mnt_cifs_flags & |
| 2066 | CIFS_MOUNT_MAP_SPECIAL_CHR); |
Jeff Layton | 7ffec37 | 2010-09-29 19:51:11 -0400 | [diff] [blame] | 2067 | cifs_put_tlink(tlink); |
Jeff Layton | 3bbeeb3 | 2009-07-09 20:02:50 -0400 | [diff] [blame] | 2068 | } |
Jeff Layton | 3fe5c1d | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2069 | |
Christoph Hellwig | 1025774 | 2010-06-04 11:30:02 +0200 | [diff] [blame] | 2070 | if (rc) |
| 2071 | goto out; |
Steve French | ccd4bb1 | 2010-02-08 17:39:58 +0000 | [diff] [blame] | 2072 | |
Christoph Hellwig | 1025774 | 2010-06-04 11:30:02 +0200 | [diff] [blame] | 2073 | if ((attrs->ia_valid & ATTR_SIZE) && |
Christoph Hellwig | 1b94746 | 2010-07-18 17:51:21 -0400 | [diff] [blame] | 2074 | attrs->ia_size != i_size_read(inode)) |
| 2075 | truncate_setsize(inode, attrs->ia_size); |
Christoph Hellwig | 1025774 | 2010-06-04 11:30:02 +0200 | [diff] [blame] | 2076 | |
| 2077 | setattr_copy(inode, attrs); |
| 2078 | mark_inode_dirty(inode); |
| 2079 | |
| 2080 | /* force revalidate when any of these times are set since some |
| 2081 | of the fs types (eg ext3, fat) do not have fine enough |
| 2082 | time granularity to match protocol, and we do not have a |
| 2083 | a way (yet) to query the server fs's time granularity (and |
| 2084 | whether it rounds times down). |
| 2085 | */ |
| 2086 | if (attrs->ia_valid & (ATTR_MTIME | ATTR_CTIME)) |
| 2087 | cifsInode->time = 0; |
Jeff Layton | 3fe5c1d | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2088 | out: |
| 2089 | kfree(args); |
| 2090 | kfree(full_path); |
| 2091 | FreeXid(xid); |
| 2092 | return rc; |
| 2093 | } |
| 2094 | |
Jeff Layton | 0510eeb | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2095 | static int |
| 2096 | cifs_setattr_nounix(struct dentry *direntry, struct iattr *attrs) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2097 | { |
| 2098 | int xid; |
Jeff Layton | 3fe5c1d | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2099 | struct inode *inode = direntry->d_inode; |
| 2100 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); |
Jeff Layton | 3fe5c1d | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2101 | struct cifsInodeInfo *cifsInode = CIFS_I(inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2102 | char *full_path = NULL; |
| 2103 | int rc = -EACCES; |
Jeff Layton | feb3e20 | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2104 | __u32 dosattr = 0; |
Jeff Layton | 4e1e7fb | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2105 | __u64 mode = NO_CHANGE_64; |
Jeff Layton | 3fe5c1d | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2106 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2107 | xid = GetXid(); |
| 2108 | |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2109 | cFYI(1, "setattr on file %s attrs->iavalid 0x%x", |
| 2110 | direntry->d_name.name, attrs->ia_valid); |
Steve French | 6473a55 | 2005-11-29 20:20:10 -0800 | [diff] [blame] | 2111 | |
Christoph Hellwig | db78b87 | 2010-06-04 11:30:03 +0200 | [diff] [blame] | 2112 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) |
| 2113 | attrs->ia_valid |= ATTR_FORCE; |
| 2114 | |
| 2115 | rc = inode_change_ok(inode, attrs); |
| 2116 | if (rc < 0) { |
| 2117 | FreeXid(xid); |
| 2118 | return rc; |
Steve French | 6473a55 | 2005-11-29 20:20:10 -0800 | [diff] [blame] | 2119 | } |
Steve French | 50c2f75 | 2007-07-13 00:33:32 +0000 | [diff] [blame] | 2120 | |
Steve French | 7f57356 | 2005-08-30 11:32:14 -0700 | [diff] [blame] | 2121 | full_path = build_path_from_dentry(direntry); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2122 | if (full_path == NULL) { |
Suresh Jayaraman | 0f3bc09 | 2009-06-25 18:12:34 +0530 | [diff] [blame] | 2123 | rc = -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2124 | FreeXid(xid); |
Suresh Jayaraman | 0f3bc09 | 2009-06-25 18:12:34 +0530 | [diff] [blame] | 2125 | return rc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2126 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2127 | |
Jeff Layton | 0f4d634 | 2009-03-26 13:35:37 -0400 | [diff] [blame] | 2128 | /* |
| 2129 | * Attempt to flush data before changing attributes. We need to do |
| 2130 | * this for ATTR_SIZE and ATTR_MTIME for sure, and if we change the |
| 2131 | * ownership or mode then we may also need to do this. Here, we take |
| 2132 | * the safe way out and just do the flush on all setattr requests. If |
| 2133 | * the flush returns error, store it to report later and continue. |
| 2134 | * |
| 2135 | * BB: This should be smarter. Why bother flushing pages that |
| 2136 | * will be truncated anyway? Also, should we error out here if |
| 2137 | * the flush returns error? |
| 2138 | */ |
| 2139 | rc = filemap_write_and_wait(inode->i_mapping); |
Jeff Layton | eb4b756 | 2010-10-22 14:52:29 -0400 | [diff] [blame] | 2140 | mapping_set_error(inode->i_mapping, rc); |
| 2141 | rc = 0; |
Jeff Layton | cea2180 | 2007-11-20 23:19:03 +0000 | [diff] [blame] | 2142 | |
Steve French | 5053144 | 2008-03-14 19:21:31 +0000 | [diff] [blame] | 2143 | if (attrs->ia_valid & ATTR_SIZE) { |
Jeff Layton | 8efdbde | 2008-07-23 21:28:12 +0000 | [diff] [blame] | 2144 | rc = cifs_set_file_size(inode, attrs, xid, full_path); |
| 2145 | if (rc != 0) |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 2146 | goto cifs_setattr_exit; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2147 | } |
Jeff Layton | 4ca691a | 2008-05-22 09:33:34 -0400 | [diff] [blame] | 2148 | |
| 2149 | /* |
| 2150 | * Without unix extensions we can't send ownership changes to the |
| 2151 | * server, so silently ignore them. This is consistent with how |
| 2152 | * local DOS/Windows filesystems behave (VFAT, NTFS, etc). With |
| 2153 | * CIFSACL support + proper Windows to Unix idmapping, we may be |
| 2154 | * able to support this in the future. |
| 2155 | */ |
Jeff Layton | 3fe5c1d | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2156 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID)) |
Jeff Layton | 4ca691a | 2008-05-22 09:33:34 -0400 | [diff] [blame] | 2157 | attrs->ia_valid &= ~(ATTR_UID | ATTR_GID); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2158 | |
Jeff Layton | d32c4f2 | 2007-10-18 03:05:22 -0700 | [diff] [blame] | 2159 | /* skip mode change if it's just for clearing setuid/setgid */ |
| 2160 | if (attrs->ia_valid & (ATTR_KILL_SUID|ATTR_KILL_SGID)) |
| 2161 | attrs->ia_valid &= ~ATTR_MODE; |
| 2162 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2163 | if (attrs->ia_valid & ATTR_MODE) { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2164 | cFYI(1, "Mode changed to 0%o", attrs->ia_mode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2165 | mode = attrs->ia_mode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2166 | } |
| 2167 | |
Jeff Layton | 3fe5c1d | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2168 | if (attrs->ia_valid & ATTR_MODE) { |
Steve French | cdbce9c | 2005-11-19 21:04:52 -0800 | [diff] [blame] | 2169 | rc = 0; |
Jeff Layton | 79df1ba | 2010-12-06 12:52:08 -0500 | [diff] [blame] | 2170 | #ifdef CONFIG_CIFS_ACL |
Shirish Pargaonkar | 78415d2 | 2010-11-27 11:37:26 -0600 | [diff] [blame] | 2171 | if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) { |
| 2172 | rc = mode_to_cifs_acl(inode, full_path, mode); |
| 2173 | if (rc) { |
| 2174 | cFYI(1, "%s: Setting ACL failed with error: %d", |
| 2175 | __func__, rc); |
| 2176 | goto cifs_setattr_exit; |
| 2177 | } |
| 2178 | } else |
Jeff Layton | 79df1ba | 2010-12-06 12:52:08 -0500 | [diff] [blame] | 2179 | #endif /* CONFIG_CIFS_ACL */ |
Jeff Layton | 5132861 | 2008-05-22 09:33:34 -0400 | [diff] [blame] | 2180 | if (((mode & S_IWUGO) == 0) && |
| 2181 | (cifsInode->cifsAttrs & ATTR_READONLY) == 0) { |
Jeff Layton | feb3e20 | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2182 | |
| 2183 | dosattr = cifsInode->cifsAttrs | ATTR_READONLY; |
| 2184 | |
Jeff Layton | 5132861 | 2008-05-22 09:33:34 -0400 | [diff] [blame] | 2185 | /* fix up mode if we're not using dynperm */ |
| 2186 | if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM) == 0) |
| 2187 | attrs->ia_mode = inode->i_mode & ~S_IWUGO; |
| 2188 | } else if ((mode & S_IWUGO) && |
| 2189 | (cifsInode->cifsAttrs & ATTR_READONLY)) { |
Jeff Layton | feb3e20 | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2190 | |
| 2191 | dosattr = cifsInode->cifsAttrs & ~ATTR_READONLY; |
| 2192 | /* Attributes of 0 are ignored */ |
| 2193 | if (dosattr == 0) |
| 2194 | dosattr |= ATTR_NORMAL; |
Jeff Layton | 5132861 | 2008-05-22 09:33:34 -0400 | [diff] [blame] | 2195 | |
| 2196 | /* reset local inode permissions to normal */ |
| 2197 | if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)) { |
| 2198 | attrs->ia_mode &= ~(S_IALLUGO); |
| 2199 | if (S_ISDIR(inode->i_mode)) |
| 2200 | attrs->ia_mode |= |
| 2201 | cifs_sb->mnt_dir_mode; |
| 2202 | else |
| 2203 | attrs->ia_mode |= |
| 2204 | cifs_sb->mnt_file_mode; |
| 2205 | } |
| 2206 | } else if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DYNPERM)) { |
| 2207 | /* ignore mode change - ATTR_READONLY hasn't changed */ |
| 2208 | attrs->ia_valid &= ~ATTR_MODE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2209 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2210 | } |
| 2211 | |
Jeff Layton | feb3e20 | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2212 | if (attrs->ia_valid & (ATTR_MTIME|ATTR_ATIME|ATTR_CTIME) || |
| 2213 | ((attrs->ia_valid & ATTR_MODE) && dosattr)) { |
| 2214 | rc = cifs_set_file_info(inode, attrs, xid, full_path, dosattr); |
| 2215 | /* BB: check for rc = -EOPNOTSUPP and switch to legacy mode */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2216 | |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 2217 | /* Even if error on time set, no sense failing the call if |
| 2218 | the server would set the time to a reasonable value anyway, |
| 2219 | and this check ensures that we are not being called from |
| 2220 | sys_utimes in which case we ought to fail the call back to |
| 2221 | the user when the server rejects the call */ |
Steve French | fb8c4b1 | 2007-07-10 01:16:18 +0000 | [diff] [blame] | 2222 | if ((rc) && (attrs->ia_valid & |
Jeff Layton | feb3e20 | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2223 | (ATTR_MODE | ATTR_GID | ATTR_UID | ATTR_SIZE))) |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 2224 | rc = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2225 | } |
| 2226 | |
| 2227 | /* do not need local check to inode_check_ok since the server does |
| 2228 | that */ |
Christoph Hellwig | 1025774 | 2010-06-04 11:30:02 +0200 | [diff] [blame] | 2229 | if (rc) |
| 2230 | goto cifs_setattr_exit; |
| 2231 | |
| 2232 | if ((attrs->ia_valid & ATTR_SIZE) && |
Christoph Hellwig | 1b94746 | 2010-07-18 17:51:21 -0400 | [diff] [blame] | 2233 | attrs->ia_size != i_size_read(inode)) |
| 2234 | truncate_setsize(inode, attrs->ia_size); |
Christoph Hellwig | 1025774 | 2010-06-04 11:30:02 +0200 | [diff] [blame] | 2235 | |
| 2236 | setattr_copy(inode, attrs); |
| 2237 | mark_inode_dirty(inode); |
Christoph Hellwig | 1025774 | 2010-06-04 11:30:02 +0200 | [diff] [blame] | 2238 | |
Steve French | e30dcf3 | 2005-09-20 20:49:16 -0700 | [diff] [blame] | 2239 | cifs_setattr_exit: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2240 | kfree(full_path); |
| 2241 | FreeXid(xid); |
| 2242 | return rc; |
| 2243 | } |
| 2244 | |
Jeff Layton | 0510eeb | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2245 | int |
| 2246 | cifs_setattr(struct dentry *direntry, struct iattr *attrs) |
| 2247 | { |
| 2248 | struct inode *inode = direntry->d_inode; |
| 2249 | struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); |
Jeff Layton | 0d424ad | 2010-09-20 16:01:35 -0700 | [diff] [blame] | 2250 | struct cifsTconInfo *pTcon = cifs_sb_master_tcon(cifs_sb); |
Jeff Layton | 0510eeb | 2008-08-02 07:26:12 -0400 | [diff] [blame] | 2251 | |
| 2252 | if (pTcon->unix_ext) |
| 2253 | return cifs_setattr_unix(direntry, attrs); |
| 2254 | |
| 2255 | return cifs_setattr_nounix(direntry, attrs); |
| 2256 | |
| 2257 | /* BB: add cifs_setattr_legacy for really old servers */ |
| 2258 | } |
| 2259 | |
Steve French | 99ee4db | 2007-02-27 05:35:17 +0000 | [diff] [blame] | 2260 | #if 0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2261 | void cifs_delete_inode(struct inode *inode) |
| 2262 | { |
Joe Perches | b6b38f7 | 2010-04-21 03:50:45 +0000 | [diff] [blame] | 2263 | cFYI(1, "In cifs_delete_inode, inode = 0x%p", inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2264 | /* may have to add back in if and when safe distributed caching of |
| 2265 | directories added e.g. via FindNotify */ |
| 2266 | } |
Steve French | 99ee4db | 2007-02-27 05:35:17 +0000 | [diff] [blame] | 2267 | #endif |